black americans are encouraged to get in touch with their african roots, it's a wonderful thing... but OMG stop the presses and ban free speech when white guys do the same thing
The people who were forceably brought here from Africa to be slaves could not preserve their ethnic backgrounds during enslavement. Basically, they just became "black" no matter their ethnicity, a designation that originated with whites. Maybe with the advent of DNA testing, African-descended folks will be able to trace their roots on the African continent.
There is no reason for "white" folks to merely identify as "white," since we have had the opportunity to know our ethnic origins. What do you do to celebrate your Italian, British, Irish, German, etc. roots? Why do you need "identity Evropa" when you have all this? All of us here are part of the American Identity, BTW.