Lawrence on Trump's Taylor Swift attack- 'The most hateful mind' in presidential history

Markenzy Lapointe announced charges against the suspect in the apparent assassination attempt on Donald Trump. He is also the first Haitian American U.S. attorney in American history. MSNBC’s Lawrence O’Donnell argues there won't be another Haitian American U.S. attorney if Trump, who says that immigrants are “poisoning the blood” this country, wins the presidency. Lawrence explains the damage Trump, who has the most hateful mind and spirit in presidential history, and a Republican controlled Senate would do to the Supreme Court and federal judiciary if they were to win.