It's amazing how a population that suffers heavily from wide firearm availability (the only civilized country where you semi-regularly have school massacres) thinks that the solution to anything can be "more guns for everyone".
People are often irresponsible, irrational, intoxicated, etc. Making lethal force easily available to everyone won't solve your safety issues - will only make them worse. I think a big reason why cops are so violent in the US is that they need to be - any bum can have a gun and might kill them; that's not a concern for people in Europe, so police can be slightly more relaxed when dealing with a minority that is known to have above-average stats for criminals & general violence (e.g. gypsy here; yes, they may face many discrimination issues that black people face in US, but nobody shoots them just because they have the wrong skin color)