Police officers shot in Texas, Missouri and Florida

A police officer was killed in Texas and another wounded in Missouri in apparently unrelated ambush-style shootings, while a third officer was shot and wounded in Florida, authorities said on Monday.
The shootings marked the latest in a string of attacks on law enforcement across the country in recent months, at a time of intense public debate over the use of lethal force by police, especially against minorities.
A total of 57 U.S. law enforcement officers have been killed by gunfire so far this year, a 68 percent increase from the same period in 2015.