Three chief executives from top American companies resigned from a presidential business council on Monday following President Trump’s tepid initial response to a violent weekend in Charlottesville, Va.

Brian Krzanich, C.E.O. of Intel — one of the most important global manufacturers of computer chips — announced his departure from President Trump’s advisory council on manufacturing in a late-night blog post on Monday.

The decision followed similar moves from Kenneth C. Frazier, the chief executive of drugmaker Merck, who was the first executive to leave the advisory group on Monday, and Kevin Plank, the founder and chief executive of athletic apparel maker Under Armour, who also announced his decision on Monday evening.

Taken together, the executives’ decisions are the business community’s strongest rebuke to date of a president who has courted controversy for his entire career. [On Tuesday, a fourth executive resigned from the manufacturing council, and the president responded to the departures on Twitter by saying he knew of many more executives who could take their places.]