Comment by simoncion
I'm not sure that the presumption of innocence has eroded away in the popular consciousness. I suspect that it's roughly at the same place as it was in the 1980s. I suspect the big differences that shape one's contemporary perception of the topic are the conversion of most major US-based news agencies to publishing very little but "shock and outrage" stories, and the prevalence of the Internet Hate Machine that is clickbait-promoting "social media" pushing rage-and/or-sorrow-inducing stories in one's face.
But, yeah, it's deeply disappointing for people to say "Wow, what a strange thing for that guy to be doing. Clearly he's up to no good, should be stopped immediately, and have his property confiscated."... when the thing that the fellow is doing inflicts no actual harm on anyone at all.
> I'm not sure that the presumption of innocence has eroded away in the popular consciousness
I'm certain the social media and sensationalist broadcast media have over time nudged people closer to mob justice. Further to that, some of the wins of civil libertarians against draconian law enforcement has been eroded away by giving law enforcement sweeping powers via circumventions on due process such as the Patriot Act and that which is detailed in the OP