Yellowjackets and wasps are just nasty pieces of work... some of the more aggressive variants seem to get mad for no reason other than "they can."

That second shot reminds me of a red hornet... we had those when I lived in Texas. Nasty disposition and uber-painful sting.

I can't say as how I blame you for resorting to murder! We're actually doing a bit of murdering here, too... too many roots approaching our septic field. You gotta do what you gotta do!