Newark Mayor’s lawsuit against Alina Habba explained

Newark Mayor Ras Baraka is suing interim U.S. Attorney for New Jersey Alina Habba, alleging she violated his constitutional rights and defamed him when he was arrested at a federal immigration detention center last month. MSNBC Legal Correspondent Lisa Rubin breaks down the new legal battle brewing in Trump world and why it matters. The Department of Homeland Security and the Justice Department did not immediately respond to NBC News' requests for comment.