Unless you've been watching too many 1984 post-apocalyptic movies, it's not hard at all. My observation and experience has been that if spoken to with respect, teenagers respond respectfully including when they're in the wrong. I've been on both sides of that coin- a teenager acting up and an adult speaking to a young person who didn't know me from Adam. On the balance, they come back at you in rebellion if you're a prick about it.
I don’t know if you just woke up after a six month nap, but we are living in the book 1984.
Freedom of speech is verboten. Opinions contrary to that of the mob will get you fired or shunned. Violent rioters are allowed to exercise their tyranny, while churches are fined or pastors jailed for having more than 10 people in attendance. Police are arresting barbers for cutting hair, while the political leaders are walking arm in arm with BLM protestors. Overnight terms like All Lives Matter, which is a holy belief, are deemed racist and evil.