https://en.wikipedia.org/wiki/Estimated_number_of_guns_per_capita_by_country
You'd be surprised at just how many guns are actually in Europe.
You don't need to say you're on the right, it's heavily implied through your public statements. Down playing Police brutality is something only the Right Wing do for instance.
"It is also usually ineffective" might actually be a culture thing, sure. Australia and Britain put tough (in comparison to America) controls in place and we both saw a noted drop in gun crime, but I suppose the counter to this is we never had such a noted gun culture as you to begin with. It's still pretty easy to get a shotgun here, a lot of people are just not inclined to. People who like shooting tins and targets and crap for a bit of fun and not a massive hobby use air rifles, airsoft guns or CO2 pellet pistols (I think you call them BB guns?) and those are easy to get so people seldom end up bothering pursuing actual firearms.
Maybe this whole thing comes down to how wildly different our cultures actually are. If the Micheal Brown thing happened here, the cop that decided firing off 12 rounds because his pride was hurt would be doing time for manslaughter and for endangering the public with a firearm.
http://www.dailyrecord.co.uk/news/uk-world-news/cops-missed-gunman-raoul-moat-1091329
Here's a good example of what I mean by how the British police work the majority of the time. Moat had killed one person and shot two others, including a cop, who he left blinded. The Police, instead of just shooting him without fair trial or due process, attempted to talk Moat into surrendering, then attempted to disable him with a taser (which missed, likely due to how new and unused the particular model was to the British police). Moat, regardless of their efforts, killed himself anyway. But that's the real difference in training. The police only would of used their firearms, even against an armed and dangerous individual, if that was the last and/or most reasonable option.
http://www.inquest.org.uk/statistics/fatal-police-shootings
Here you can see how few times the Police here have had to resort to fatal force. This doesn't account for every shooting however, as the police will maim or disarm where possible.
The key differences between our police and your police are training and accountability. I mean if the Tamir Rice thing happened here then you better believe the cop who shot the kid would be in for murder, because our Police are taught that they are enforcers of the law, not above it, not the law itself and certainly not immune to it.