people had been marching to demand the release of political prisoners when the bullets rained down, and sarah palin, thundering into d.c. today, but is she ready to roll into the race for president? i m drew griffin. the news starts now. and first tonight, yemen tipping into civil war? take a look at this. troops and anti-government protesters in the southern city where there s gunfire and tear gas, all this increasing the fear that al qaeda and other islamic militants will be given breathing room to launch attacks against the u.s. i spoke with mohammed jamjoom in abu dhabi about that? reporter: earlier today, far more dramatic pictures, also a lot of it posted on social media, purporting to show security forces in the city firing on these protesters from roof troops and take a listen to some of the shots as you can hear on these videos. [ gunfire ] reporter: they tell us that rocks were being thrown from roof tops, that gunfire was ringing out from roof tops, that over