Background: Mark Reed Levin (; born September 21, 1957) is an American lawyer, author, and radio personality. He is the host of syndicated radio show The Mark Levin Show, as well as Life, Liberty & Levin on Fox News. Levin worked in the administration of President Ronald Reagan and was a chief of staff for Attorney General Edwin Meese. He is president of the Landmark Legal Foundation, has authored seven books, and contributes commentary to various media outlets such as National Review Online.
Context: According to The Guardian, "constant attacks on Democrats and the left are important components" of Levin's modus operandi. According to Politico in May 2009, Levin pronounced "almost daily" that Obama "was a failure, a liar and a "statist" who is trying to destroy individual freedom." In June 2017, Levin accused Senator Bernie Sanders of being "a radical Marxist who believes in violence." According to Rutgers University political scientist Stephen Eric Bronner, Levin tends to use "socialism" as a "catch-all term to condemn any policy that strengthens the social welfare function of the state." In July 2014, he called Jon Stewart "a knee-jerk idiot", and suggested that Stewart was a self-hating Jew.  He has criticized Republicans - including Paul Ryan, Lindsey Graham, John McCain, and Mitch McConnell - with whom he disagrees on "constitutional conservatism." He sometimes refers to these people as RINO's.  In July 2009, Levin called former George W. Bush speechwriter David Frum a "complete and utter fraud". Levin endorsed Orrin Hatch when he faced a primary challenge in 2012, but later apologized for his endorsement when Hatch said that he would be willing to support a path to citizenship for undocumented immigrants. Since then, he endorsed a number of Republican primary challengers to incumbent Republican senators. Levin supported the Tea Party Patriots' campaign to "fire" House Speaker John Boehner. Earlier in 2010, Levin criticized Glenn Beck for his criticism of congressional Republicans.  In March 2016, Levin endorsed Ted Cruz for the 2016 Republican presidential nomination. Over a month after Donald Trump was nominated, in September 2016, Levin stated on this radio program that he would vote for Trump in the general election, following his declaration earlier that year that he was in the "Never Trump" camp. He qualified his support by stating that, "I take no responsibility for the dumb things he says or the dumb things his surrogates say." Levin supported U.S. Representative Mo Brooks in his campaign in the 2017 Alabama special election against incumbent Luther Strange, who had received a temporary appointment earlier that year.
Question: What do people think about him?

Answer:
scientist Stephen Eric Bronner, Levin tends to use "socialism" as a "catch-all term to condemn any policy that strengthens the social welfare