Welcome to the Last Chan on the Left. Content here is to abide by one simple rule, Nothing Illegal. As long as you abide by that rule your content will never be removed by a global staff member.
Board admins may choose to administrate their boards how they see fit. You may find that content not appropriate for a board is removed by their own admin team.
"Free Speech" boards, controlled by the admin team include /b/ & /pol/ (/pol/ has an additional rule: don't fucking shoot people or write a manifesto about that sort of shit).
As long as you abide by the no illegal shit rule, your content will never be removed from those boards.