People on the ground are saying that the police come in to break things up after getting the internet shut off in the area so they aren't recorded on Facebook Live. Sometimes there is misinformation on the ground so it's tough to be completely sure, but the Cuban government doesn't deserve a ton of benefit of the doubt.See above. As of present there is not an organized repression of the protests.
For sure, there has been organized repression of protests for decades in Cuba, including in the last year, which is why something of this scale hasn't happened in modern times. Thousands of people are suddenly out in the streets; they didn't all decide they don't like the regime over night. They are saying that what has changed is that they aren't afraid to protest anymore. You could listen to them.
It's also complicated and tough to make decisive observations. Where one person says "those people are throwing rocks at that police car," others say "that police car is speeding through a street crowded with protestors because it's trying to hit them."