What bomb? The driver intentionally plowed into a crowd of people and was shot by police. An armed citizen could have stopped the driver before police arrived and potentially saved lives.

The meme was supposed to be ironic but I don't think it's coming across that way.

They'll just lie about being democrats and get guns anyway or have their republican friends buy for them

The vast majority committed by felons, career criminals etc. So the gov't has dropped the ball. I don't see how taking rights from the law abiding due to the actions of criminals is going to help.

Well the population of Canada is about 36 million, the population of the U.S. is over 320 million so...the math doesn't work in favor of your statement.