Per USA Today:

Three people died in a shooting outside a Walmart in Duncan, Oklahoma, when a man shot his wife and her boyfriend before killing himself, police said Tuesday.

Response from people who have to persuade customers to voluntarily give them money in exchange for goods or services:

Walmart spokesman Payton McCormick told USA TODAY that no staff members were involved in the shooting or injured, and the store was not evacuated. Police said Tuesday that one exit to the store had remained open and the store had continued to do business.

Response from people who get money from people other than their “customers,” whether the payers want to pay or not, and whose “customers” have to accept the goods or services whether they want those goods or services or not:

Schools in the city were briefly locked down following the shooting.

Imported from the original KN@PPSTER