"You had a - you know, someone as despicable as Hitler, who didn't even sink to using chemical weapons", Spicer said.
Ms Pelosi, the Democrats' leader in the House of Representatives, said that Mr Spicer was "downplaying the horror of the Holocaust" and should be sacked, as did the New York-based Anne Frank Centre for Mutual Respect.
Speaking at a local town hall meeting with constituents on Wednesday evening, Rep. Mike Coffman, R-Colo., said Spicer "needs to go" because he is not serving President Donald Trump well. "I remember all the terrible pictures coming out of World War I from battlefield use of gas and the gas masks and what it did to people".
Comedy Central still hasn't announced a season 4 premiere date for Nathan for You yet, but the revival of Summit Ice has certainly made the wait an entertaining one. "I think what he was saying is that Hitler didn't take chemical weapons out in a battle-like form and do what Assad did with these children". He also asked people to forgive him for his "mistake".
"Your job as a spokesperson is to help amplify the president's actions and accomplishments and I think he's had an unbelievable successful couple of weeks".
According to Stern, Spicer's stupidity shifted the conversation from Assad's atrocities against his own people to the question of how Spicer could "not know that Hitler marched his own people ... to concentration camps and turned on chemical gas". Since the inauguration, however, Stern has said the presidency will be "detrimental" to Trump's mental health because "he has a very sensitive ego".