When I was a kid, I and many of my friends had BB guns; very realistic looking rifles and pistols. Here is a photo of the one I owned which was my favorite. My friends and I wandered the fields in our neighborhood shooting at things. I once accidently shot a friend in the back, which produced a nasty welt. Another kid once intentionally shot at me from a distance and the BB hit my eye. I came very close to losing my vision in that eye. In both of those cases, had they been bullets and not BB's, death or very serious injury would have occurred.
I guess what I'm trying to say is that what Tamir Rice was doing in that playground when he was gunned down by police was no different from what I and my friends did day after day when we were his age. The difference is that he was African-American in an African-American neighborhood and that he had the misfortune of living in a time and place where gun violence and the resulting paranoia is at a fever pitch. We have got to do something about both the institutional racism and the madness of guns in our land.