Why embracing “Abolish ICE” and Medicare-for-all won’t doom the Democrats.
Outside of truly extreme proposals, there’s basically no plausible position a politician or political party can endorse or enact that will have a meaningful impact on their likelihood of retaking political power. The US has for decades had a stable system where liberal and conservative policy coalitions (which have sorted out under the Democratic and Republican parties, respectively) semi-regularly alternate in power, with long periods of divided rule and gridlock in the middle. Dramatic shifts in the ideological makeup of both parties during that same period did not upset that alternation of power. It continued apace.