A Bitcoin proponent saying he wants to be the first to block certain coins is like a free speech proponent saying he wants to be the first to censor something.
We don't need blocks, blacklists, whitelists, labels or bans.
We already have what we need: math.
If the recipient of Bitcoin can solve the math, they get the coin. Period. End of story.
Opening the door to ban lists is a door open for major banks and regulators to do the same.