LESTER HOLT: ‘We Don’t Know What The (Shooter’s) Motivation Was’

LESTER HOLT: But you bring up a point. I think we all will be talking about it and that is, of course, that we don't know what the motivation was for this, but it certainly comes at a time that we are all keenly aware of the deep divisions and the risk of political violence. Is it something you even thought about as you set out to attend this rally tonight?