10 Ways to tell if someone is too mentally ill to own guns

http://theimmoralminority.blogspot.com/2014/06/10-ways-to-determine-if-someone-is-too.html

1) They believe that guns should be openly displayed in public – everywhere. 

2) They hoard guns in anticipation of a possible overthrow of our federal government. 

3) Even the slightest mention of a new gun regulation sends them into a paranoid rant about gun confiscation, bringing about references to Nazi Germany. 

There are many more on the link