Bukhari[52:260] "...The Prophet said, 'If somebody (a Muslim) discards his religion, kill him.' ". The Quran advocates the death penalty for those that leave Islam.
The US has never stopped persecuting people for political views, wether be it the Irish, or the Chinese, or the catholics after them, or the Japanese in WWII, or the communists in the Red Scare, or the muslims in the War on Terror
These groups aren't oppressed in the United States. I know many open Irish, and Chinese people; I was raised Catholic and my parents definitely aren't oppressed, The Japanese, communists, and Muslims aren't oppressed either. Trump's Muslim ban did not pass so Muslims can enter the country.
now for so many things I can't even count: white-nationalism, nazism, racism, antisemitism, homophobia, transphobia...etc.
These groups get free speech, but they aren't running the country and making policy that makes lives worse for jews, blacks, gays, or transgenders unless there is a victim at play. For instance, some people oppose trans women competing with cis women because of the claim that trans women have denser bones and more testosterone that would make them easily a favorite to beat a cis women in the sport, thus making it unfair for cis women. But nobody in power is in favor of killing or jailing transgenders for instance.
Propaganda. The State, by design, must terminate what or who undermines it, otherwise endangering itself.
Representatives and presidents have political opponents at every election cycle. The representatives don't censor their opponents. They don't kill their political opponents.
I can say things in Saudi Arabia & nobody would care, but if I say them in the US they would likely throw me in jail.
This is probably inaccurate. While communism was historically censored, it isn't anymore because the US lived up to it's ethos of freedom in the end.
You are indoctrinated since early age to sanctify democracy & liberty & freedom of speech
In American schools (something I attended), the schools teach us about the bad stuff we did (like slavery, the trail of tears). It's because of this that many people have a negative view of America, and they don't go to jail for it.
Although most schools do think this hadith refers to apostasy, the Awzai school does not, as they understood the word 'Deen' to mean allegiance.
So if you leave your country to move to America, and you renounce your allegiance to your former country, you would get put to death? The rest of this paragraph you claim that the penalty for leaving Islam is death according to the other schools you mentioned:
The Hanafi school interpret the word as allegiance in religion, for the Prophet (pbuh) specifies in a different hadith "those who abandon their faith & desert the community" (providing a more restrictive definition): thus they sanction death for militant apostasy. The Maliki school, on the other hand, take the view that this applies to any apostate who knowingly & willingly came into religion then left it.
A Snowden from another country might have been celebrated there as a hero, while in the US he is deemed a traitor.
Snowden was regarded as a hero by many.
There is probably a 0.1% to 1% atheists in the Muslim world, that's millions of people... That does not mean apostates are killed either.
The atheists in Muslim countries have to hide their atheism out of the fear of being jailed or executed.
There are two ways an apostate might get in serious trouble with the state: 1. publicly criticize the state
It's totally fine to criticize the state; I for one don't like Biden waving pride flags at US military bases. The only flag that should fly on US military bases is the US flag. That's me criticizing the state; and I should not end up killed for it.
2. really push the envelope, like insult the Prophet (pbuh) or burn the Quran or something like that.
It's fine to insult the prophet; I think God or Allah is very full of himself and advocates for the death penalty for some things that should be legal. Burning the Quran is like burning the American flag (I'm an American); totally something that should be legalized as it is a victimless crime. Any victimless activity should be legal.