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The Latest on pool incident: Texas city where officer resigned once lauded in survey

  • Demonstrators gather near a community pool during a protest Monday, June 8, 2015, in response to an incident at the pool involving McKinney police officers in McKinney, Texas. (AP Photo/Ron Jenkins)

    Demonstrators gather near a community pool during a protest Monday, June 8, 2015, in response to an incident at the pool involving McKinney police officers in McKinney, Texas. (AP Photo/Ron Jenkins)  (The Associated Press)

  • In this June 8, 2015 photo, a McKinney police officer stands near demonstrators during a protest in response to an incident at a community pool involving local police officers in McKinney, Texas. McKinney is an affluent Dallas suburb that is among the nation's fastest-growing cities, with highly regarded public schools and nationally recognized livability rankings. But a video showing a white police officer wrestling a black girl to the ground at a neighborhood pool party has renewed racial tensions in a city that only three years ago settled litigation alleging public housing segregation. (AP Photo/Ron Jenkins)

    In this June 8, 2015 photo, a McKinney police officer stands near demonstrators during a protest in response to an incident at a community pool involving local police officers in McKinney, Texas. McKinney is an affluent Dallas suburb that is among the nation's fastest-growing cities, with highly regarded public schools and nationally recognized livability rankings. But a video showing a white police officer wrestling a black girl to the ground at a neighborhood pool party has renewed racial tensions in a city that only three years ago settled litigation alleging public housing segregation. (AP Photo/Ron Jenkins)  (The Associated Press)

  • In this June 8, 2015 photo, a water tower with a city slogan painted across it is seen behind a housing area in McKinney, Texas. McKinney is an affluent Dallas suburb that is among the nation's fastest-growing cities, with highly regarded public schools and nationally recognized livability rankings. But a video showing a white police officer wrestling a black girl to the ground at a neighborhood pool party has renewed racial tensions in a city that only three years ago settled litigation alleging public housing segregation. (AP Photo/Ron Jenkins)

    In this June 8, 2015 photo, a water tower with a city slogan painted across it is seen behind a housing area in McKinney, Texas. McKinney is an affluent Dallas suburb that is among the nation's fastest-growing cities, with highly regarded public schools and nationally recognized livability rankings. But a video showing a white police officer wrestling a black girl to the ground at a neighborhood pool party has renewed racial tensions in a city that only three years ago settled litigation alleging public housing segregation. (AP Photo/Ron Jenkins)  (The Associated Press)

The affluent Dallas suburb of McKinney is fast growing, its public schools are highly regarded and it's been ranked by one publication as America's best place to live.

But video that prompted a white McKinney police officer to resign amid scrutiny over how he treated a group of black teenagers at a pool party has raised concerns about race. And McKinney only three years ago settled lengthy litigation alleging racial segregation in its public housing.

Officer Eric Casebolt is seen on video forcing a teenage girl to the ground and pulling his firearm after two males rushed forward in apparent protest. He resigned Tuesday.

People who participated in a rally this week protesting the police response used McKinney's name in the same sentence as Baltimore and Ferguson, Missouri.