Nobody's saying "I want to rename the Democratic Party to the Democrat Party" or silly BS like that. With ads like these, they buy a variety of keywords, occasionally tie them to whatever they're selling, and the ads are assembled at random on site.
If someone bought the words Democrat, Democratic and Democracy, then those words will show up in ads - as the third of them did for one of my text ads right now. A human does not actually assemble a large chunk of these ads; they're genuinely automatically produced, not some evil republican plot to, uh, do something whose relevance I can't quite ferret out.
I'm serious; these things, as often as not, do not pass in front of human eyes before getting sent out. If you Google for various terms, you'll find some real doozies as far as text ads go.
Here's some examples to show you how nonsensical they can get. My personal favorite, back a few years when a certain movie was coming out:
This one was also weird enough to save:
Now and then I find one that I'd love to be true:
Some of the combinations will be annoying, yes (this one was right after the Boxing Day tsunami):
But if you actually look around at some of these things, you'll see that they're often way too nonsensical to be deliberate things. Folks need to calm down, in other words - this isn't some hideous plot, nobody's trying to push anything other than their product, and you aren't being harmed unless you simply don't like ads. Take a few minutes to see some of the more ridiculous ones you can find, and you'll be amused by them. These ain't people; they're computers massively flunking the Turing test.