We’ve watched a fair share of fights on the subway, but this appears to be the first to involve a woman willing to mace another woman and then exchange blows, while her baby stroller rolls out of the open train doors, with the baby still in it, as seen in this recently uploaded YouTube clip.

According to the video’s description, the altercation erupted on a Brooklyn L train two days ago over a seat, which can be a major source of contention while riding NYC transit, buses included. UPDATE: The fight didn’t end there.