Article continues below advertisementKamala Harris' concerns for the country have only increased in the months since Donald Trump was inaugurated back in January.The former Vice President of the United States doubled down on her criticism of the Republican leader during an appearance on the Monday, September 23, edition of MSNBC's The Rachel Maddow Show.In her interview, Harris deemed Trump a "tyrant" while promoting her new book 107 Days, which was released on Tuesday, September 23.