Van Hollen on his own going down there was enough to cajole them into giving him a face-to-face meeting with Abrego Garcia. Two days ago half the people on the internet were convinced Abrego Garcia was already dead, but just 1 Senator was able to disprove that. The government of El Salvador was so afraid of the optics of denying just a single Senator that they backed down from their initial refusal and completely capitulated.
And you think it's fantasy that a larger number could accomplish more? You are clearly not paying the slightest bit of attention.
Peaceful demonstrations have ALWAYS played a part in every successful social movement. They shouldn't be the ONLY thing people are doing. They should be paired with more radical strategic actions. But solely relying on violence is also a losing strategy. We should embrace a diversity of tactics, not shout down people who are out there trying to do something.