The next time someone claims that it was wrong to waterboard terrorists to gain information about attacks on the US, ask them this question:
If your 12 year old daughter was kidnapped by 2 guys and you caught one of them what would you do?
See if they would accept some torture then. Ask them where do they draw the line on torture. They will likely think it's OK to do it to save their 1 daughter. However they are not alright with using it to save possibly millions of people in LA?