>> reporter: susan whitebrook is born and raised on miami beach and says she has never seen anything up to spring breaks in the past? >> it's wilder. >> reporter: some are accusing the police of using unnecessary force on a predominantly black crowd. >> i think the response to crowds of black people doing whatever they're doing always tends to engender a little bit more aggression, a little bit more force. >> reporter: but police insist they're targeting unlawful behavior. >> we're training officers to be as compassionate and understanding as they possibly can be in the face of adversity. when you deal with it week in and week out for five weeks, it becomes a challenge for the officers to maintain their composure and to be professional at all times, but that's the expectation and we're going to continue to do that. >> reporter: it comes at a pivotal point. miami is seeing the highest positivity rate of large metro areas in the country, between 9.5 and 10%. and cases are rising in 21 states. >> i would just encourage people and remind people now is not the time to travel. >> reporter: