Do you know what the word tankie means? Because I don’t think the people you are describing are tankies. Progressives, democratic socialists, maybe some anarchists, or just Palestinian liberation people of all stripes but tankies no. Tankies are not supporting the Democratic Party because they don’t generally believe in democracy. If they were to vote it would be third party or maybe even for Trump in the hopes the west will destroy itself.
Tankies are dangerous so please don’t dilute the meaning of the word that way.