Photographing and filming the police is an often touchy topic. Mostly due to a lack of education on the part of some police officers. These officers (and it is a tiny minority) seem unaware of the actual laws regarding it. Or, they outright lie and say it is illegal, sometimes to the point of allegedly beating those filming them unsonscious.
Now, a panel of judges fro the 3rd US Circuit Court of Appeals unanimously ruled that this falls under the First Amendment. An individual’s right to film police officers in the performance of their duties has constitutional protection. The decision involves two instances where civilians had attempted to film Philadelphia police officers, and were retaliated against.