Speaking of Germany, you recently had a mass attack on a train. Difference was this was a knife attack and six people were stabbed, no fatalities. Attacks are just so much harder when you can't easily acquire a highly lethal weapon, but here in the US there is a huge group that sees the possession massive arsenal as a vital right that must be prioritized when voting. Individual states can't even really provide effective increases in prohibitions because a shooter can just driver over state lines like this guy did.