It's frustrating to watch white musicians be so ready to have legions of Black dancers/singers behind them, work with Black producers, sing about how "we" do and then be nowhere to be found when a Black tragedy takes the national stage.
When Warren G first topped charts in 1994 with his inescapable hit "Regulate," featuring fellow West Coast rapper Nate Dogg, hip hop was no place for gays. In recent years, that has started to change... slowly.
Some may not see the connection between these two situations, but I'd argue that Ike Barinholtz using a slur that offends black folks, and Macklemore donning a getup that offends Jews, are strikingly similar.
I hope that Perry offers an apology along the lines of Mackelmore and pulls the video off the web. It belongs as part of history -- but has no place in a society that values cultural and ethnic diversity.