In their day the Viking were savage warriors, to be rightly feared.   The Viking were invaders.   In contrast the Klu Klux Klan was a mere terrorist gang of hoodlums.   That Vikings were vastly more nasty than the Klan.  The Klan left behind statues.  The Vikings entire cities. 
Yet in York, the Brits have celebrating the Viking invasion for over thirty years, video:

Yet so far as I know, no British snowflakes were reported to be injured, or in attendance.  So why the difference?