How to use "accidentally" in a sentence

And now, just when I'm beginning to think I can face up to it and put it behind me, I discover he might not have died accidentally after all

"I just can't believe the government would murder a group of little children just because they accidentally got a glimpse of a new weapon or something."

Almost thirteen months ago, when Danny and the other boys in his troop were on their winter survival outing, one of our scientists, a quirky son of a bitch named Larry Bollinger, accidentally contaminated himself while he was working alone one morning in this lab."

He accidentally knocked George down