Yes, you would need to make them unidentifiable by blurring their face, anonymizing their voice and any other feature that may identify them.

Wide shots of crowds are generally ok in public, the issue is focusing on specific people. For example someone having a mental breakdown in public.

You also can not have door bell or private cameras pointing to public streets/roads. You have to ensure your camera only records your property and you are required to post a sign that a camera is installed.