No, you're really not understanding the point.
It's not "one movement after another", it's the same movement, and they are judging based on their personal experiences with police.
Wrong.
Who is "they"? The people of Ferguson? The black people of Ferguson? The people who rioted and burned the lady's sewing store or the people who contribuited to rebuilding it? The people who got bussed in for the riots in Ferguson and Baltimore?
No, this is a pattern of people thinking there is a phenomenon and then trying to create it. It goes along with the fake "campus rape culture", the fake "GOP War on Women," the fake "bakers discriminate against gays" and now the fake "police target young black men." All fakes. All inventions of the media and supported by opportunistic politicians.