It was a badly thought out mission that was handed to the wrong unit and didn't receive any of the support it needed. There's no way a light infantry battalion could have defended Srebrenica from Mladic's army. It was theatre based on the hope that Mladic wouldn't attack.

While it was a particularly poor showing for a UN mission, and badly handled at every possible level, I don't think it's comparable raping children. It wasn't the UN soldiers who murdered the civilians, they were just completely unable to prevent it, and provided only an illusion of defense.