Comment by devoply

Two words: gun control. Around 30% of the population may have mental health issues at any point. In a country like the US that's millions of people at any given time. It's a testament to relative peaceful human nature that more acts of random violence don't happen more often. And outside of those issues they may be perfectly normal people who would not think of doing anything to anyone... so if they didn't have the means maybe their crime may be much smaller and easier for them to continue their lives after their health issues lessen in severity.