Genuinely, yes. That is the only way to stop the US Empire and achieve Socialism.

The shortest possible answer is orrganizing with leftist parties and building up Dual Power, ie comparable democratic institutions that can readily-replace the existing state structure. Imperialism brings about the death of Capitalism, eventually this decline will result in a shift to revolution, so having an organized group at the time of revolution ready to help guide that revolution and establish Socialism rather than barbarism is what's important for Leftists.

There's a lot of theory on the subject you can read, but you can also look at the Party Programs of FRSO and PSL.