the second one with the story under it stated that the man in that video wasn't carrying in a non-threatening position and instead had it on his hip, which could easily be used threateningly.
I don't see racism as an issue in either of them.....I see a police response that is appropriate to protestors wanting them dead, and said protestors are mostly black and they (the police) are being cautious. The black men in these videos gave appropriate responses to police directions, and were probably released quickly. (your article again doesn't state the results, which makes for very selective reporting) Unfortunately, most of the protestors or even those being approached by police refuse to obey and those are the majority of the problems.....they are begging for confrontation and when they get it, they try to make sure someone has a camera rolling and liberal media exploit that crap.
Would YOU want their job where they have to make an immediate decision in order to protect themselves? You DO realize that close to 98% of the police population ARE not racists, don't you?