No, because despite whatever the talkshows say, both parties and especially the judiciary are largely committed to preserving constitutional rights. There's disagreements on finer points of where the lines are drawn, but that's handled in courts and legislation, and rarely ever guns ablazing.
Compare to Hong Kong, which is not governed by consent of the governed.
Wasn't there an impeachment procedure blatantly sabotaged by one of said parties like last year? Didn't the same party blatantly say they're stacking the supreme court in their favour up to the last possible moment, in an extremely hypocritical manner after refusing to accept Obama's nominees in his last year? Didn't multiple US presidents abuse and violate human rights with illegal wars and torture, mass surveillance? Didn't a US president order the murder of a US citizen without due process? Didn't a US state create a blatantly unconstitutional law for witch hunting women ? From across the pond, it seems that most US politicians in power, mostly from one of the parties, are wiping their asses with the the US constitution.
No, because there _are_ armed activists.
Were there violent uprisings against censorship in the UK, Canada, or Australia that failed due to a lack of access to arms?
See Hong Kong of late. Many banners seen during free-speech protests there lamented their lack of a "2nd Amendment".