This is how leftists think. This is the normal pattern of this ideology, practiced so well by Stalin, Mao, Castro, Pol Pot, Chavez, Mussolini, and Hitler. Over and over, this is what totalitarians do. "Re-educate" those who do not favor your utopian visions, and execute or "disappear" those who refuse to be "re-educated".
This is why they hate the Second Amendment so. This is the clear and present danger.