I am trying to delete my attachments and can't figure out how to. Can someone help me to figure this out?

After the past few days of crazy Internet news about some people taking pics and using your pics on other sites I've decided to delete all of my pics. I still have them on my computer to enjoy privately and if anyone needs a pic just let me know. I am doing this so my pics or anyone I have pics of doesn't become the latest Craig's list add or porn site "babe" of the week.

Thanks!