Why can't a socialist party/org use deceptions and dirty tactics to win power?

We're supposed to be policy 1st. And yet I don't understand the obsession with being a honorable samurai that plays by tradition. Why can't a sheep put on the wolf's mane when they're greatly outnumbered and bide their time?

It's not like the liberals would notice. They only know ideas. They're still propagandizing shit like recycling, even though the trash bin is all thrown in the same truck and the bins with 3/4 holes aren't even separated, same as it was 20 years ago. They should be really easy to manipulate, especially when truth is on your side, but like at least make them paranoid and unable to sleep at night.