This is idiotic.
Fact: The 1994 federal ban on assault rifles would have made it illegal for James Holmes to purchase the AR-15 used in the Colorado shooting. That ban was not renewed by congress and, as a result, Holmes was able to legally purchase the gun and use it to kill 12 people.
Fact: Canada, with very strict gun control laws, has a murder rate of 1.8%. The United States, with lax gun control laws, has a murder rate of 5.5%.
I need to make a “GUNS DON’T KILL PEOPLE!!1!one!” bingo card. The BS talking points are so frequently repeated.