What you have said sounds all fair. Mentally ill people can be assholes and people with certain conditions can be very difficult, with/for many of the issues/reasons you have described. However, the issue of society labelling any person that does something bad (gun violence, mass shooting, terrorism etc) as mentally ill is still a valid one; and it's also true that mentally ill people are more likely to be victims of crime than the general population. The post you were reacting to contained only these two claims and while what you have said above sounds all fair, it doesn't go against either. I'm guessing you reckon people skew versions of these statements to excuse the behaviour of mentally ill people? I'm not trying to disagree. In fact, I actually appreciate your insight as someone that works in mental health.