Should I call the police on her?

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I live in public housing and we’re on the lower floor. There’s a woman on the 2d floor and she is abusing her kids. She tells them ugly things and hit them and she and her husband fight in front on them. :/ I’ve been thinking on calling the police because everyone can hear her screaming to her kids but nobody does nothing. And coming from being abused I feel like shit for not saying anything. Should I call the police?