You are talking about the law as written. I don't think all laws are just or legitimate. I don't support Legal Positivism and I don't agree that certain people should be favored by law over others. If the policeman pushed a protester into the water, he wouldn't be guilty of assault. If two swimmers got into a disagreement and one pushed the other into the lake, he would be guilty of assault. You base your opinion on holding policemen and government officials to privileged or higher status. I don't. They are both human. They should be held equally under the law. If they aren't that is a failure of our legal system.
It isn't weird. Despite us agreeing on different subjects. Y'all all believe in Statism. You hold government officials as more righteous or protected than other people. I don't. I believe in natural law and the rights that come from that natural law. Not the divine right of kings or the magical innocence of policemen when they put on certain clothes.
The person may have acted foolishly in light of current law. It could be pointless because he isn't going to get his way. But he is standing up for what should be his right. In that he is a patriot and a hero.
Otherwise, we have to believe that it is somehow unethical or immoral to stand less than 6 feet from a person. We have to believe a policemen has the right to tell people just how close or far away they are allowed to be to other people. We have to believe that people don't fundamentally own their own bodies and the ability to make their own decisions where it doesn't infringe on other peoples'. We have to believe that Government has the right to announce and enforce any edict they want, without vote, without constraint.
The baseline facts, this is for you Garmel, is that all the people at Lake Austin that day made a conscious decision to leave their homes and go to the lake. No one forced them. They did not believe they were endangering themselves. Then when they were their they made the decision to gather with other like minded people. No one was forced to stand within 6 feet of any other. If someone was walking up to people and invading their space without the consent of the other people, then that would be a violation of those people's rights. They and the policeman would have the right to say, "hey, those people don't like that you are too close to them. step back or away. they think you pose a threat to their health."
But that clearly was not the situation. These were all people who were exercising their God given right to gather with other people to enjoy an afternoon at a park. I wouldn't have pushed the policeman in the lake. But the only choice was to submit to an illegitimate order or to refuse. Ultimately, something like that was going to happen. The dude escalated by pushing the policeman. If he wouldn't have the policeman could have escalated by doing something else, if the people didn't submit. I side with the people wanting to hang out in peace at the park.