potential to lead to polarization. you can live stream events now which helps us capture moments. it also helps people stream things like terrible acts of violence. for each of these things, the internet platforms and facebook especially, we have a responsibility to make sure that we address these harms and make sure that we can address these risks. i feel like we can do that in a way that still protects freedom of expression. it's our responsibility to make sure that we address the issues and also to push back on broadening the definition of what people consider dangerous online beyond what is absolutely necessary. >> dana: it's interesting it's coming this week. the democrats have one of their debates this week and in which there was a long exchange with senator harris of california and elizabeth warren. kamala harris says she thinks that twitter should shut down president trump's account. do you think that is a