The police demanded he stop filming, which he refused as he knew his rights. Now he has been charged with 2 crimes, which are interfering with a police action and resisting arrest.
It’s clear from the video that the man was not interfering with the police action and recording them was legal, also as the Supreme Court has ruled, you can resist an unlawful arrest:
“Citizens may resist unlawful arrest to the point of taking an arresting officer’s life if necessary.” Plummer v. State, 136 Ind. 306. This premise was upheld by the Supreme Court of the United States in the case: John Bad Elk v. U.S., 177 U.S. 529. The Court stated: “Where the officer is killed in the course of the disorder which naturally accompanies an attempted arrest that is resisted, the law looks with very different eyes upon the transaction, when the officer had the right to make the arrest, from what it does if the officer had no right. What may be murder in the first case might be nothing more than manslaughter in the other, or the facts might show that no offense had been committed.”