Copyright is what keeps Jeb Bush from using Creedence Clearwater Revival songs at his political rallies.
Wrong. Most artists have a system either through their label on their own called licensing. If someone wants to pay an artist to promote a product, or be used to present a lifestyle that is attractive to potential customers or voters. When these political campaigns purchase a license, most artists don't have a veto over it, and take to the court of public opinion to shame the politicians into not using their music. Fuck those artists. If they want to sell their product to a specific ideological crowd, they should say that up front. Those that are 'all about the music' and 'taking a message of $PEACE$LOVE$WHATEVER to the people', and then cry when someone with some media exposure uses their product in a legal contractual way should be given an Iron Maiden treatment. Fuck. Them.