Official report from BBC:
You can see there is video, up to 0:53. At 0:42-0:49, you see a woman in a headscarf and denim jacket, next to a man in a grey shirt, holding a baby.
Then, strangely, the video is cut, and there are 30 seconds of still images of the same man, woman and baby on the tracks, apparently having been assaulted by the evil Hungarian police, with the voiceover
"and then a really distressing incident happened, the woman who was carrying a small baby began crying for help.
one of her companions tried to help her.
somehow there became a push and shove with the police and she was ended up on the railway lines"
The actual video of the incident shows a completely different story:
the man throws the woman (his wife, presumably), and baby onto the railway tracks, while he shouts aggressively, whereupon the police understandably handcuff him, and get the woman and child off the railway line.