Police violence, rape and autism only appear to have increased recently. The evidence shows they haven't.
What seems to be happening is that they are reported/accounted/diagnosed better. You hear more about them thanks to new channels. Violence against blacks in many areas of the US (as well as violence against minorities in general worldwide) has been common and stable over the recent past (correcting for the general drop in violence in industrialized countries since the late 70s that many attribute to removal of lead in gasoline). The general media had mostly ignored some of those issues. But they can't do so anymore now because of the prevalence of cell phones (video evidence), citizen reporting (blogs, twitter, facebook, etc) and new ways of organizing movements online.
Note that I chose those three exemples because of their clear recent increase in reporting and news coverage. For what it's worth (and will do to my karma) I support #BLM, social justice movements and I am convinced vaccines have nothing to do with autism.