What happened to the resistance on the left?

What the hell are you talking about?

The fight continues - here's their latest effort to topple fascism:

https://thehill.com/homenews/state-watch/5103052-mississippi-contraception-abortion-masturbation/

Although, if Elon can't give his salute, what do they expect him to do with his hands?

There is no left worth mentioning in the US.
There used to be a few YT channels like Kyle Kulinski's Secular Talk or The Hill while Crystal Ball was moderating there, but they've all sold out to the right.
It's all just theater, Democrats and Republicans working hand in hand on their corruption, enriching the rich ever further while using topics that do not effect the enriching of the rich, like immigration and abortions, as the means to "divide and conquer" the population so most people won't notice they are both right wing authoritarians.

The only one who is still somewhat telling the truth is Jimmy Dore, because he's calling out both parties, but he's recently drifting off into conspiracies and doesn't have any real good topics anymore.

The way I see it there's no point in resistance anymore anyway, it's simply too late, the system will crash full speed into the abyss that I usually call "1929²" and there's nothing we can do against that anymore, only question is when it will happen.

They’re being moved to mental institutions where they belong.

There is plenty of time. Two years until the mid-terms.

Oh they're fighting back all right, but they've learned not to be as loud about it now, because now they've learned, after the 2016 election and 8 years of fear-mongering, that their lies about Trump aren't gonna work anymore. They only "got away" with it in the past because people hadn't seen President Trump in action yet, nor had they seen what bad Democrap leadership looked like comparison yet. Now they know, particularly after the number of people who voted for him in the election, that people aren't buying their lies anymore, and they can't just say whatever they want about him because people will now see that it's lies.

In fact, now the news outlets are having problems getting enough people to watch because they've been made to look like the dishonest fools they always were, and the various companies have seen what "woke" has done to damage their brands and bottom line, so now they're not only scared of President Trump, but they're scared of their own customers now.