A SUMMER OF TRAGEDY

July 5: Alton Sterling, a 37-year-old black man, is fatally shot by two white police officers while he was held on the ground. The shooting sparks nationwide protests.

July 17: A lone gunman ambushes Baton Rouge police officers, killing three and wounding three. The attack is said to be racially motivated.

Aug. 10-17: Nearly 30 inches of rainfall inundates southern Louisiana, claiming at least 13 lives and damaging about 40,000 homes.