I don’t mean this the wrong way, because you seem like a good guy...
But if I have to explain this to you, or anyone else (for that matter) by this point, I’m not certain it’s worth explaining. In short, the liberal side of politics is all in to do whatever is necessary to defeat Trump in Nov. This is their last hurrah. They know Trump’s economy will easily re-elected him, therefore they’re doing everything possible to harm it, in hopes this creates voter change in Nov. Create chaos, then blame it on Trump.
This is no theory, it’s real. Ironically, they’re now realizing it’s not going to work... but they’re trying.