Racism

Yesterday as my mom was going to put her car in our drive way a police stopped her. i went outside with my dad and he tried to go with her but the police screamed at him and said to stay there. he told them that my mom didn't speak English, but they kept on asking her questions. then they started searching the van. that's when my dad went with her and he told them again that she didn't speak English. the police told him that if she didn't know then how did she get her licence. we told him that they make the test in Spanish and he didn't say anything. then they left. i didn't get why they were screaming we weren't doing anything. they were relay rude. i took it as being racist.