MSNBC Host Katy Tur got a little testy with conservative commentator Erick Erickson, who dared to bring up that the Left has become unspooled since Donald Trump's upset win over Hillary Clinton in 2016. Over the past few days, 13 devices that look like bombs have been mailed to prominent Democrats, including former presidents, and celebrities. We just had an arrest in Florida, but we don't know what their political leanings are, if any, or a motive. We don’t know. Yet, the liberal news media know exactly who it is: Donald Trump…and his supporters. We’re to blame for the Left becoming...