The New York Post faced a barrage of criticism for its cover on Friday that declared “civil war” in large text following the Dallas police shootings.

{mosads}Five police officers were killed and seven wounded after snipers opened fire Thursday night during a protest of fatal police-involved shootings of black men this week.

Authorities and political figures urged calm in the wake of the attack, the deadliest for police since 9/11.

Three suspects are in custody. Dallas Police Chief David Brown said Friday morning that a fourth armed suspect, who died after a standoff with police, wanted to kill white police officers.

The Dallas shooting came as debate over race and police use of force roiled the country this week after the deaths of Alton Sterling and Philado Castile, two black men who were shot and killed by police in separate incidents this week.