Overview: 2010/04/21 Headlines: NATO Attack Kills 4 Afghan Civilians; Fmr. Argentine Junta Leader Sentenced to 25 Years; Iraq Accused of Torturing Sunnis at Secret Prison; Israeli FM Warns Against Peace Effort; Humanitarian Ships to Attempt New Breach of Gaza Blockade; Peoples' Climate Summit Opens in Bolivia; Brazil Auctions Off Dam Project, Indigenous Groups Vow Resistance; Goldman Profits Increase; UK Regulators Open Probe; 6 Arrested in DC Protesting Don't Ask, Don't Tell; Supreme Court Overturns Law on Depicting Animal Cruelty; Evangelist Who Called Islam "Evil" Slated for Pentagon Event; Dorothy Height Dies at 98; Benjamin Hooks Dies at 85