Way too many examples to list all of them, but here is the easiest: Mamdani used the phrase "seizing the means of production" during a live streamed conference of the Young Democratic Socialists of America in February 2021.
Firstly, that’s not a policy, and secondly, if seizing the means of production just means supporting labor-owned businesses, it’s not communism. The version of communism that people point at is government-controlled means of production topped with authoritarian policies. Mamdami is not even close to that.
The fact that people aren’t considering economic ideas outside of capitalism is fucking absurd. Capitalism is not fundamentally capable of incentivizing humans over money.
We have some massive problems that aren’t going to get better by bowing to monopolies and cutting taxes for the wealthy.
If you’re a capitalist upset by seeing slightly socialist preferences in voters, feel free to make capitalism work better. Which typically includes borrowing socialist policies.
It’s not rocket science, if a pretty sizable chunk of the population is getting absolutely screwed by our economic system, expect them to vote for people who want to make it better.
Please point to even one policy (not the stuff that his opponents disingenuously claim his policies are) that even approaches communism.
Here's a link to help you out with that:
https://www.zohranfornyc.com/platform