It doesn't make it acceptable but it shows that one increases the change of a bad outcome by acting stupid.
Was anyone in doubt that behaving stupidly can result in negative outcomes? How is it relevant to the case at hand? I find it disturbing that when an unarmed man gets shot five times in the back while fleeing from a police officer who then planted a taser beside the body to incriminate the victim, that some people's most prominent thoughts on the matter are "well that victim was stupid!" instead of thinking "well that cop just straight up killed that guy for no good reason and planted evidence to incriminate the victim!"
What's very telling is that the victim is being blamed (and yes, it is victim blaming even if you insist it isn't) for "panicking and doing something stupid" while the cop is simultaneously being defended for "panicking and doing something stupid" (see Loren's earlier post about planting the taser beside the victim).
When you've been shot five times in the back by a cop you were running away from, it's not that bad because you "panicked and did something stupid". And if you're a cop and plant evidence beside a dead body, that also isn't too bad because you "panicked and did something stupid". It's just amazing to see the hoops people will jump through to excuse gross abuse of power by a cop.