[lazyasciiart]

Cameras provide evidence that is far more reliable and simpler to present than testimony from a railway security guard. This evidence could even be shared publicly to support their case.

[nradov]

Cameras don't provide much useful evidence in these cases. The recordings typically show a medium size man wearing a hoodie. Could be anybody.

[fennecfoxen]

Won't do much good if no one's taking them to court, which seems to be an issue at the heart of the complaint.