Very few people are familiar with leftist thinking and the average person have a hard time imagining radical change. They have been brought up assuming politics is just about making small adjustments to the status quo and presuppose that everything else will be left in place exactly as it is now when they hear a proposal.

When someone talks about abolishing schools and police most people hear "abolish schools and police and leave the rest of the capitalist system intact", which would be an insane proposal, not "abolish schools and police as part of a radical change of society".