Them: It's 2018 nobody cares that you're gay. Homophobia doesn't exist anymore. Get over yourself. My YouTube notifications:pic.twitter.com/moASu15TR4
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That's a lot harder than you think, you could block the words, but then you run into issues with words with those stings contained, like the town of Scunthorpe in the UK, or people could use 1337 speak. Matching music exactly is easy, looking at context is hard.