Funny you mention that. I was this >< close to preempting your comment by mentioning him but figured I'd give you the benefit of the doubt.
Ask yourself, why do you even know Till's name? Why did Till's killing spark national outrage when 20yr later that would have gotten barely a peep out of people? Because times changed and that kind of behavior was no longer excusable.
>but I think living in a community where you could be brutally killed for any or no reason...
Till was killed for violating social norms (that he presumably was not sufficiently aware of). His death was no different than that of a peasant 1000yr earlier killed for bad mouthing a local lord. It's tragic. But it wasn't without reason, though we may think the reason flimsy and disagreeable.
And this time I am going to head off the inevitable reply by pointing out that I am not defending or justifying Till's killers, just explaining the context.
Those who fail to understand history...