I'm sorry, but did none of you actually read that article? The only piece of evidence they provided for their headline "Kitten overlooked for adoption because she looks like Hitler" is a vague little "We think her unusual markings are putting people off" from one member of staff. The evidence given does not point to the headline in the slightest. There's no record of someone saying to them "sorry, we don't want that cat, she's a cute cat, I know, but she just looks too much like Hitler". I think this story is drawing a conclusion that doesn't actually exist, personally.
Yes, cats that look like Hitler are serious business...