At Vance events, a back-and-forth with media is red meat for the crowd

It seems like you’re referencing a political event with a candidate named Vance. In this context, “red meat for the crowd” likely means that the interaction between Vance and the media – potentially featuring controversial statements or heated disagreements – is something that the attending crowd strongly reacts to or finds exciting. Vance’s supporters seem to enjoy these interactions, possibly because they see him as standing up to the media or presenting views they agree with. If you need more specific information, please provide more context or specific questions!