President Trump bowed to overwhelming pressure that he personally condemn white supremacists who incited bloody demonstrations in Charlottesville, Va., labeling their racist views “evil” after two days of equivocal statements. “Racism is evil,” Trump said. “And those who cause violence in its name are criminals and thugs, including the K.K.K., neo-Nazis, white supremacists and other hate groups that are repugnant to everything we hold dear as Americans.” Pressure reached boiling point early Monday after the president attacked the head of the pharmaceuticals company Merck, who is black, for quitting an advisory board over his failure to call out white nationalists.