There, Seattle police's chief hostage negotiator had more time and was able to explain why half the city's streets were shut down for hours, along with addressing other interesting questions, like "Would you rather negotiate with a horse who is holding 100 ducks hostage, or with 100 ducks who are holding one horse hostage?"
(He opted for the one horse, noting that the single animal would be much easier to convince.)
That AMA marked a new form of community outreach: Police departments across the US are getting hip to Reddit's unprecedented reach as a platform. Some of the biggest police departments in the nation prefer local subreddits to Twitter accounts and Facebook pages. The Seattle police have had a Reddit account since 2013, and the New York and Los Angeles police departments both joined Reddit this January.
"We jump on Reddit because we know we're going to get tough questions and try to answer those," said Jonah Spangenthal-Lee, Seattle's senior communications manager. "There's good engagement there, and it can be focused."
Reddit, established in 2005, is one of the most popular websites in the world, and last May it briefly became the third-most visited page, surpassing social network giants like Facebook and Twitter. It's since dropped to sixth place, but it's still beating online titans Netflix and Instagram. Anyone can create an account, but unlike Facebook and Twitter, people are allowed to remain anonymous, without needing so much as a real email address to sign up.
On Reddit, which describes itself as "the front page of the Internet," there's the main page, and then small communities called subreddits that are dedicated to specific interests. People vote on content, and posts with a high amount of downvotes are often buried. Despite Reddit's popularity, it's remained relatively untouched by most social media managers, as the website has its own community and customs that don't fit the same mold as Facebook or Twitter.
"That's a funny thing about Reddit," Mathew Rejis, the LAPD's chief strategic communications officer, said. "Everyone knows what Reddit is, but nobody really knows what it is."
A Reddit spokeswoman said the company helped the NYPD and the LAPD join Reddit. Reddit started talking to the Los Angeles police after working with the LA mayor's office, and the New York cops reached out after an introduction from the LAPD communications team.
Police departments being on social media isn't new. Most law enforcement agencies now have a Twitter account or a Facebook page to post public service announcements and to answer questions for the community.
But social media has proven to be a double-edged sword for police, who find that while they have a new way to reach the public, not everyone online is a fan of law enforcement. When the NYPD tried a "#myNYPD" Twitter campaign in 2014, hundreds of photos of police violence flooded their feed.
Reaching an audience on Reddit is difficult, with an audience that values authenticity. An AMA with actor Morgan Freeman backfired after milquetoast answers had readers questioning whether they were actually speaking with Freeman or his publicist instead.
With police, it's even more difficult, Rejis said.
"That is an uphill battle that law enforcement is facing," he said, "because people's natural instinct when you say something on social media is it's some form of propaganda."
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But Reddit offers features for police departments that other social networks don't, like a downvote system that essentially hides their worst posts. While Twitter has an informal "ratio" structure, its most controversial posts are still amplified by the engagement.
Staying on community subreddits also keeps their posts limited to people within the community. Outsiders aren't regularly visiting the New York or Los Angeles subreddits.
Police have found that Reddit's biggest benefit, however, is the community -- which they say is more engaged than the people on Twitter and Facebook.
"It's a different audience with different people, who are very engaged, very passionate," said Yael Bar-tur, the NYPD's director of social media and digital strategy. "Reddit has its unique culture, and you have to be able to speak the language a little bit."
It hasn't exactly been a warm welcome for the NYPD on the r/NYC subreddit.
Chinese New Year arrived shortly after Bar-tur created the account, and the second post wished a happy Lunar New Year to the subreddit. The top comment wrote, "12 possible Zodiac animals and the NYPD social media manager makes these cops do a video for year of the pigs."
Bar-tur said she doesn't mind the criticism. She's on Reddit frequently in her free time and knows people can be negative. What's valuable to her about Reddit is knowing what the community is interested in, and how they can help.
"People were upset about the subway post," Bar-tur said. "People can downvote it if they don't like it, that's completely fair. But we did our duty to the community."
The official account also helped someone report hate symbol graffiti, and others find their local precinct. That's important engagement, she said.
It's been two months since the NYPD joined, and people have become more receptive over time. There were several comments defending the NYPD after a post questioned why police were on the subreddit.
The LAPD had a similar experience after joining Reddit, said Rejis, who has been using the website since 2010. He said he understands that people don't like the LAPD, and he's been using Reddit to get feedback on how the police department can improve.
"There were some posts asking, 'Why is the LAPD on here? Reddit's gone to crap,'" Rejis said. "If it was 100 percent positive, I probably would've been skeptical, like something was being filtered."
"The outcome of the election concerned a lot of people in our immigrant community," Whitcomb said. "We don't always have the best relationship, and they don't always have the best opinion of us, so for us, this was an opportunity to say we're here to serve you."
The NYPD constantly posts wanted posters and warnings about criminals on the loose, as well as replying to threads in which people said they were attacked in the city. Posting on Reddit hasn't helped the NYPD solve any crimes yet, but it's definitely helped with its community outreach, Bar-tur said.
The LAPD's Rejis, meanwhile, believes that the collective Reddit base could help solve crimes one day.
"If someone can give a tip through Reddit, which I think is just a matter of time until that happens, that's something we're working towards," he said.
Rejis said the LAPD is planning to host a social media summit this year, with a mass invitation to every police department in California. He wants Reddit's staff to speak and explain why the social network is so helpful for police.
So get ready to see more police in your local subreddit. They're perfectly happy to hear all your criticisms and the weird questions you wouldn't directly say to an officer.
Originally published March 30. Updated April 1: Added background details on Reddit.