according to senior white house advisor dan pfeiffer we know those sentiments exist but you'd be missingage with a lot of non-trolls if you stayed off the network because of the people doing it "it" being rage-filled racist tweets. randy cohen, host of npr's ask me another, ophera and dean obidala. in terms of the internet is it just the face where evil doing can flourish unlike other public arenas? >> i think the platforms are different. i think facebook is nice. it is like going to a cheesecake factory. it is a fun thing. twitter is like a horrible place where you can communicate with people but trolls come in big numbers and i get a lot for my -- being progressive and for being muslim. stuff i get is crazy. the best advice for people is you can either block or mute them. this is a new thing, mute. they get blocked, they actually brag. you mute them they don't know it. mute, don't block and they don't know. stupid people think you still see their crap. >> i feel like the anger and hatred and racism that came out in the wake of the president literally saying hey it's me barack i'm on tw