It's not "political correctness," it's the Presumption of Innocence.
If you don't like the Presumption of Innocence, then...I hope you're never mistakenly arrested.
Well, they had him with a knife the day before and still took no action. Presumption of innocence is not an excuse for being dumb and putting lives in danger. The balance here was tipped too far in the defendent's direction.
Actually it's the presumption of stupidity of jurors. We got along fine for many many decade allowing the accused to be restrained. Jurors knew that their evaluation of guilt or innocence had to based on the facts presented, not "guilty until proved innocent". Now we figure, perhaps rightly in some cases, that the jurors are dumb as a box of rocks, dominated by their glands.