Cold hard reality: Millennials will soon be the biggest voting block and the deciding factor in the future of America.
Millennials don't get their news and political opinions from traditional media, they use Reddit. Reddit is growing gangbusters, its the 4th biggest site in the US already and almost every urban millennial reads it, even if they don't have an account.
The Democratic Party invested a lot of money into having accounts there that spread their ideology using long copy-pastas filled with sources (which impresses Redditors).
If you want to stop the next generation of voters from being pro open borders, pro socialism and anti-white, you need to deal with the Reddit problem. The "March For Science" and much of the feminist marches against Trump were organized on Reddit. Leftist propaganda now dominates much of the major subreddits, and it holds massive sway with young people.
To stop leftism from spreading among the next generation, get on Reddit and make good posts with sources, that's how you stop the cancer.