Poor countries have more crime - guns or not.
In other words, Guns don't kill people, people kill people?
Repeating memes might indicate that to argue your case, you can't think on your feet, can't post original arguments, and are victim to group think.
Based on my biased personal experience, less original statements are more often true than clever new statements. Not to make an appeal to the masses, but good ideas often become memes, and bad ideas often die with their creator.
http://www.pbs.org/wnet/need-to-know/culture/is-there-a-%E2%80%98liberal-gene%E2%80%99/"Some of the questions used to measure openness are also used to measure novelty seeking, so we thought people with the gene related to novelty seekers might be more open and therefore more liberal."