This is an intriguing case in duplicitous argument and reckoning. Yes it unjust to unfairly categorize all people suffering mental affliction as potentially homicidal, suicidal, psychopathic, sociopathic or some combination of all of the aforementioned. There doesn't appear to be the same consideration of gun owners. ALL homo sapiens are potentially dangerous whether they have or haven't overtly given an indication they may be. When someone is fixated and obsessed on violent ant-social behavior there is the difference. I own firearms. I know a lot of people who do also. I don't know or associate with anyone who wakes up in the morning hoping to shoot someone. Trust me, if I encounter someone who does I'll let you know about it.