While watching footage of when Hitler came to power, I got a pop up on YouTube to the effect of Obama wanting to take away guns & how I'd vote. It's nice they put it up on YouTube so the masses can see this amazing footage (I saw the Wright Brothers' flight for the first time there). But watching that ad pop up just drove home the point that we just traded humans for pigs to run our farm.
I use Privoxy on my devices consequently I am always surprised at the ad laden internet other people have to use. I never see youtube ads at home. The worst is when some classroom video demonstration (I'm a part time student, soon to be full time) has to wait for an ad to complete / skip.