Constant red light violations– what do they do?

Good day from Berlin, here there is a temporary pedestrian traffic light in Lietzenburger Str., which overrides the regular traffic light. There is a large construction site, therefore this solution. I have to walk there every morning to teach the mailbox. The pedestrian traffic light is activated by means of a button. This week alone I have observed three red light violations. In my opinion with considerable danger. The pedestrian traffic light was always green and the three are without going off the gas. I was already on the road (was also green, the car red) and only by attentive observation on my part nothing happened. The drivers did not even react to hand signs, with which I wanted to refer to the red traffic light, which was at least 2-3 seconds red. No reaction. I am not one who has the ad as a hobby. De facto I have never displayed one (rarely nowadays, or?) But I find it really too far. Zero guilt awareness. Danger to the pedestrians. How would you deal with it? The police point out this? Record license plates? Cross road only with camera? Watching traffic is clear, does not want to be overrun. The drivers were (unfortunately confirmed the prejudice) ladies or older men. Once Benz SUV, once Astra with “0” license plates and the third I don’t know exactly anymore.