There's one thing that's ironic about the South Lawn of the White House: the fact that nobody has burned a cross on it in the past few years.
I am not quite sure what you're getting at about the White House. Do you mean to say that the White House has been religiously cleansed? Is that what you wanted to pass on?
Yes, I'm saying the South Lawn has been cleansed from any type of godless activity.
Burning crosses is a hate crime and is not something appropriate to joke about since it trivializes the suffering of black people from the actions of the Ku Klux Klan. It's important to know about our country's history, even the negative parts, and I think it would be a good idea to learn more about the Ku Klux Klan and what they have done to black people in the south. Having a better understanding will allow you to recognize that a hate crime like cross burning is not appropriate for jokes.