Under what power does this happen? They gonna shoot the concert promoters? Good luck getting new concerts.
Short answer: It is possible, since they are very well connected.
First, they are the adult children of the former dictator; have access to any number of operators in the power network, know where quite a few bodies are buried and know what levers to pull.
Second, one of them, Rosa Virginia, is married to the present vice president, Jorge Arreaza.
Arguably, and particularly since they have not been kicked out of the palace, they are more powerful than the current president.