Can de Blasio overcome unpopularity to challenge Trump for president?

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New York City Mayor Bill de Blasio (D) is facing ridicule after announcing his run for president. But the jabs aren’t coming just from political opponents – many of the mayor’s own liberal constituents are poking fun at him, and even allies have warned him not to run. Laura Nahmias, a Politico reporter who has covered de Blasio extensively, joins Alex Witt to unpack the reaction to his candidacy.