Ever since the release of “Monster: The Jeffrey Dahmer Story,” viewers of the MA-rated drama streaming on Netflix have been able to “portray” the serial killer Jeffrey Dahmer by purchasing lookalike costumes on eBay and through other online marketplaces. That was until eBay banned sales of Dahmer “costumes” and/or accessories this week, as the show increasingly gains traction and Twitter users continue to react. “These items are banned on eBay and are being removed under our ‘Violence and Violent Criminal Policy,’” an eBay spokesperson told Fox News Digital on Wednesday in an emailed statement. “These items have been prohibited under...