If that's real, that's very interesting. There's a lot of discussion about whether the agent was out of line in trying to block the vehicle by standing in front of it (he would have been wrong to do that; that's against the ICE guidelines), but he wasn't even doing that. He was just walking around the vehicle, and the woman took off when he happened to be in front of it.
As far as the giant dinosaur goes, some people just decorate like that. There's a house in our neighborhood that keeps a massive skeleton Halloween decoration in their front yard year round (it's taller than their house), and they dress it up differently based on the season/holiday.