President Trump Retweets Video Of Supporter Shouting 'White Power'

The video features a controversial retweet by President Trump, showing his supporters in a parade where a 'white power' slogan is shouted. The video also includes counter-protesters labeling Trump negatively. The retweet was removed after criticism from Senator Tim Scott. The White House stated Trump did not hear the slogan. This incident occurs amid ongoing racial injustice protests following George Floyd's death.

What did the White House spokesperson claim about President Trump's awareness of the white power shout?

What event sparked ongoing protests over racial injustice mentioned in the text?