<prompt> Translate the following text to EnglishWakati mwingine miaka 30 inaweza kuonekana kama muda mrefu kwa mtu anayejali malalamiko tangu vita vya mwishoni mwa miaka ya 60, lakini katika historia ya historia - baada ya miaka 90 ya Jim Crow na miaka 200 ya utumwa wa rangi - ni kitu.  <response>: Thirty years may seem like a long time to someone nursing a grievance since the pitched battles of the late 60s, but in the sweep of history--on the heels of 90 years of Jim Crow and 200 of race slavery--its nothing. 