Salesforce employees have asked executives to cease the San Francisco-based software company's working relationship with the National Rifle Association, after an elementary school shooting in Uvalde, Texas, killed at least 19 children and two teachers this week.

Less than two weeks earlier, a gunman killed 10 Black people in a Buffalo, New York, supermarket in what authorities have called a racially motivated attack.

The Salesforce letter, which was first reported by SFGATE, was addressed to co-CEOs Marc Benioff and Bret Taylor, Chief Financial Officer Amy Weaver and Chief Marketing Officer Sarah Franklin on Wednesday evening.