The DM was a DM asking us to change our no tankies policy and remove the fuck tankies banner as it was apparently upsetting hexbear users. Apparently tankies view the word tankie as a form of slur. The admin wants us to ally as a form of "left solidarity"
If the person saying it is a leftist, they mean authoritarian leftists, the sort of people who unironically praise Mao and are very positive towards modern-day China. If the person saying this is more right-wing, replace "tankie" with "commie scum" when you're reading and you'll get what they mean just fine.
Accurate as fuck