Pipe down. That happened the once in Paris, as it still could happen in America if guns were banned, this happens 5-7 times a year in the USA and that's mass shootings, many more individual shootings you not I will know about. This isn't a Jihadi issue, this is an issue because this absolute tw@ probably perfectly legally purchased an assault weapon and has killed 50 human beings and injured another 50. Same as those shooting in California a few months ago and all the mass shootings at schools/colleges.
Brushing it off as something that could happen anywhere because it happened in Paris is not the way to go. I'm fairly certain the Paris attackers didn't Bob into Le ASDA and get a shed load of ammunition and a few assault rifles en route to the targets.