Fox News has an article up naming the fallen Officers. I copy-pasta'd this bit of it because I don't think I've ever actually seen a media outlet have the stones to call it like it is.
They were military veterans, husbands and fathers who served the city of Dallas – and died protecting the rights of fellow Americans to criticize their brethren in blue.
Five police officers – four from the city’s main department and one from Dallas Area Rapid Transit were killed by a racist sniper late Thursday as they guarded anti-police brutality marches at a march. By Friday afternoon, three had been identified: Brent Thompson, Michael Krol, and Patrick Zamarripa.