Police beat me while I was on the ground, screaming at me to “STOP RESISTING”

I saw a group of officers in riot gear. They let me approach to the corner of the intersection. They then told me to leave. I started backpedaling, asking why, and stating that I was a journalist practicing constitutionally protected activities. I was peace full and non threatening. An officer pointed his weapon at me. I declared “are you pointing a fucking weapon at me?” The cop aiming at me laughed. I asked him if he thought it was funny to aim a firearm at an unarmed journalist. I was then assualted by the police. They tased me, attempted to smash my phone. Beat me while I was down on the ground, screaming “STOP RESISTING!” I was not resisting.