After the Madonna performance it was said that Madonna handed Palestinian and Zionist state flags to the dancers. TV was saying it was an unexpected affront and goodbye Madonna's career.

Maybe if this is a very special arrangement.

More likely scripted like everything in a rock show.

The lead artist does not pay the back up performers and generally does not have control over them.

There is a choreographer in charge of the dancers, and a costumer in charge of what they wear and carry.

The lead artist takes orders from a director or producer, so do the backup artists.

Odd to think Madonna would have the clout to tell the other artists to do such a thing.