Rule 2 of the community guidelines does state that all political pictures (defined as a picture of a politician of any country of any planet) are prohibited and will be removed. So they are not wrong, in spite of the down votes. I do wonder if the community were to have a similar poll today on whether these types of images should be banned how it would turn out, assuming the community has grown significantly since the months that have passed since the prior vote. The second choice was very close in the original poll which would have provided an exception of one political picture allowed per current event.
Edit: here's the link to the community poll for context if it helps anyone else!
We can be nice about helping people who ask honest questions too :)
Many people are unfamiliar with the concept of different communities having different rulesets. Even people who come from reddit land.