Like you, I also find the Alex Jones and his ilk to be disturbing and harmful, and consider it a bad sign that people like you and me need to qualify any statement against censorship by explicitly saying we aren't part of the American far right.
"To target immigrant-hating videos, the room-sharing service uses keywords on YouTube’s ad platform that are associated with far-right content and anti-immigration groups, such as Pegida, Germany’s anti-Islamist group, and its leader Lutz Bachmann. Other keywords include “refugees out” (“asylanten raus”), “refugees terrorists,” and “the truth about refugees.”
A German can’t watch a anti-immigrant YouTube video associated with a keyword without first seeing a 30-second preroll ad from Refugees Welcome."
If you want to make an Immigrants Not Welcome ad and pay for it to appear before videos with terms you choose you are free to do so.
http://slatestarcodex.com/2017/05/01/neutral-vs-conservative...
"Neutral" is no longer neutral, and if you keep telling people they are bigots undeservedly, they will leave and set up their own media, with blackjack and hookers, creating real extremism.
And extremist content should be harder to find, regardless of source. There's a big difference between extremist content and less violent political discourse, though. And YouTube as a hosting platform vs. hosting your video elsewhere.
That all said, the Google OneBox is already an example of altering search results to display what Google thinks you meant based on potentially slanted sources on the Internet.
How much you wanna bet that “feature” is going to be used to alter/redirect the video results for other things like political opinions that Google doesn’t approve of? I foresee the right wing extremists like Breitbart and InfoWars getting affected by this. Not that I like either of those, but I think this is going to be a super sneaky way to curate the feeds that people see and the videos that are searchable online. Twitter did something recently that was very similar to this and people were finding that their followers weren't seeing their tweets.