They didn't actually bring many people. Joey was driving, Karl was sitting in the passenger seat, and Capone and Sophia were in the back.
The lead car was Howard's, which actually contained police investigators. For something like this, it was practically impossible for the police not to get involved. However, with Howard's influence, they didn't take full control; some things were left for Capone and the others to handle on their own, which actually yielded better results. The police were only there to provide cover and prevent the situation from escalating.
Behind them, another car followed, carrying several of Antony and Mandy's capable subordinates.
