Hundreds of Hollywood stars, including Jane Fonda and Joaquin Phoenix, signed an open letter to voice their opposition. The protest targets a potential acquisition that would see Warner Bros. studio bought by its competitor, Paramount.

An open letter signed by hundreds of Hollywood heavyweights, including Jane Fonda, Joaquin Phoenix and Bryan Cranston, was published Monday opposing a deal that would see the historic Warner Bros. studio swallowed by rival Paramount.