To my ear "rise up" and anything with "oppression" also have the negative connotations that aren't particularly useful. Both expressions are old, associated with a generic and unsuccessful leftist movement in the US. Additionally, "oppression" has the same problems as "resist" in that it makes one sound like a victim and a complainer. That's not to say the meaning of "oppression" is bad; roughly: undue or unjust restriction on freedom. In the US it's better to use the language of liberty. So instead of talking about "oppression" one should just articulate threats to liberty and freedom, particular from the government writ large or the Federal government in particular.