Good for you I guess but my point was lawful permanent residents shouldn't have to worry about memes on their phones.

Legally they should, especially if those memes are anti-American. They are subject to immigration law, which is constitutional.

We are so nice to non-citizens in America that many of them actually do think they are legally a citizen's equal, except for voting rights. (I used to think that myself.) They are not.

Everyone in the US is protected by the Bill of Rights, including the right to free speech. Even immigrants.