>> from the first moment, donald trump has been the most polarizing president in an already bitterly divided america. >> we will impeach him. we will impeach him. the people said, but he hasn't done anything wrong? oh, that doesn't matter. we will impeach the president. >> we have been through periods of polarization before. the difference now, i think, is that we don't have a common baseline effect. we disagree on reality. >> that dangerous state of affairs. we disagree on the facts on reality itself is reflected in ow americans feel about impeachment. in a new cnn poll, exactly half of americans say they support the impeachment and removal of donald trump. but is the case strong enough?