I've seen media reports (evening news) in which pedestrians have provided anecdotal evidence to local television stations regarding crosswalk violations. Depending on how busy the station is with reporting tasks, it may become a suitable news piece.
In one report, the student (on an open campus) provided cell phone video to the station. I can't recall if mention was made regarding law enforcement, but the station performed an observation and a few interviews on site, then followed it up with another report that law enforcement had stepped up monitoring that specific area.
I've not been able to find online representation of this particular segment.
I'd also expect that the enforcement action provided only a brief respite to the violations.
In a nearby area known for enforcement actions, some of the crosswalks have flashing lights and an activation button, as well as hidden patrol cars for that community. I suppose the cost of the installation of the safety equipment might have been balanced by the increased safety of the community, but it's unlikely enforcement fines were used to compensate the installation costs.