Experiments/ corruption /cover-ups/etc - making a list...

Hi.
I've been a lurker here for some time, first time poster, and I have a request. I was recently discussing with a friend various government activities - while he thinks all things the government do are lovely, friendly and above board, I am not so certain. To prove him wrong (and, for that matter, for future use) I'm trying to build up a list of things that the US/UK governments have done in these areas - be they experiments, dangerous chemicals, conspiracies, etc.
NOTE : as my friend is a sceptic, I want those with online proof, Wikipedia articles, that kind of thing!

So far:

Tuskagee
MK-Ultra
Iran-Contra
Agent Orange
Gulf War Syndrome (re: depleted uranium rounds)

Any others to add to the list?

Thanks in advance!



mod edit to add space, title was skewing page



[edit on 14-4-2008 by DontTreadOnMe]