You get a burner for the protest and give your phone to a friend or family member for the day so that it still pings towers at the usual places.

You leave it at home. Take an old factory-reset with a prepaid sim. Keep it off unless you 100% need it.

Stolen from another post:

"you need around 6 layers of tin foil you can test this if you have a bluetooth device start playing some music or any audio and start wrapping in tinfoil until it disconnects id also say to leave your phone at home sk it pings the cell towers that you are at home and bring a burner if you can and make sure the burner is private so use cash prepaid sims and dont put the sim in at home or work make sure its all a mall away from cameras"

Be safe tomorrow everyone