PHILADELPHIA (CBS) – One in five people in the United States has a disability.

The Americans with Disabilities Act (ADA), is supposed to prohibit discrimination against those with disabilities and ensure equal opportunity for those who are disabled. That law covers all disabilities, including what some people refer to as “hidden disabilities,” such as autism.

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Unfortunately, the United States Department of Justice receives numerous complaints each year from people claiming they’ve been discriminated against.

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One Philadelphia area family with a disabled child says their daughter faced discrimination on a recent trip to Hershey, Pa.

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3 On Your Side’s Stephanie Stahl will share this little girl’s story, including what the family is doing to make sure it doesn’t happen to others, on Eyewitness News at 11 p.m. on Thursday.

Stephanie Stahl