It is your First Amendment right to observe and record the police while they carry out their duties. In a 2017 case, Fields v. City of Philadelphia, the Court stated:

“[e]very Circuit Court of Appeals to address this issue (First, Fifth, Seventh, Ninth, and Eleventh) has held that there is a First Amendment right to record police activity in public. See Turner v. Lieutenant Driver, 848 F.3d 678 (5th Cir. 2017); Gericke v. Begin, 753 F.3d 1 (1st Cir. 2014); Am. Civil Liberties Union of Ill. v. Alvarez, 679 F.3d 583 (7th Cir. 2012); Glik v. Cunniffe, 655 F.3d 78 (1st Cir. 2011); Smith v. City of Cumming, 212 F.3d 1332 (11th Cir. 2000); Fordyce v. City of Seattle, 55 F.3d 436 (9th Cir. 1995). Today we join this growing consensus. Simply put, the First Amendment protects the act of photographing, filming, or otherwise recording police officers conducting their official duties in public.”

More Information:

https://www.aclupa.org/en/issues/first-amendment-rights/your-right-record-and-observe-police