I’m writing a key for those who don’t get what’s so fancy about four numbers

86 = 8 miles out and 6 feet under, I believe from Las Vegas gang slang. Where to bury the guy that cheats your casino.
46 = USA President no. 46, Joe Biden
47 = USA President no. 47, Donald Trump

Put them together and you have a code that incites violence/murder of the mentioned US President.

Edit: Fuck, the Vegas origin is a myth.

86 47