How would any rational person foresee that a person having a meltdown on a subway would be needlessly choked to death?
People who engage in violent crime against random strangers - like Neely had done on at least four occasions (once breaking an old woman's bones!) - puts himself in greater danger of being harmed due to his behavior.
As Jimmy pointed out, mentally ill people don’t necessarily belong in jail or prison.
According to the reports I have seen, Mr Neely was having a meltdown. Unpleasant to witness and maybe scary, but he was not threatening violence. If those reports are accurate, Mr Penny had no business assaulting Mr Neely,let alone using a chokehold that killed him.
But hey, another disposable human was taken out if the way. Just another example of the guy in the white ‘hat’ ridding the town of the man in the “black” hat, so you cheer it on.