Well as indicated in the comment if they are "using American web services to thrive in a very oppressive economy" and those services cut them off because they can't be bothered to discriminate then they are potentially harming those person's livelihoods.

So it's the lack of services that's causing suffering, not the services themselves? That makes more sense, but then your protests should be directed at the US government, which created the sanctions.

Agree, and the service providers are fairly supportive stakeholders. But is a small group of entrepreneurs in Venezeuala and tech companies going to change the administration's policy on Venezuela? I doubt it.

I'm not protesting, I was just providing exegesis