Trump Weighs Military Action on Iran After 500+ Protesters Killed

As aggressive and deadly crackdowns on anti-government protesters continue in Iran, activists say morgues are filling up with security forces using live ammunition to crush the uprising. A human rights group says more than 540 people have been killed so far. Now, President Donald Trump says he's weighing all options against Iran including military action. NBC’s Richard Engel reports for TODAY. Warning: Some of the images are disturbing.