A private company is not above the law
What are you talking about? The "law" is regarding government restricting free speech not private companies.
"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."
Last time I checked Twitter and Facebook weren't passing any laws.
Again, private companies can determine what is and isn't appropriate as they deem fit on their sites.
This has ZERO to do with censorship.
People really need to understand what it is they are reading or quoting because the same types of arguments are made by those saying they have the right to bear arms. And they do...AS A WELL REGULATED MILITIA.
Convenient for them to remember the last part of the sentence when ignoring the first as if it didn't exist. Last time I checked most people aren't in a militia and even if they were I doubt it would be very well regulated. Pretty much it seems like this would be considered the National Guard.