Cops in Florida won't do anything about it, maybe they'll file a police report but usually this will simply be filed under landlord tenant dispute and you'll be told it's civil. $650?

Here's a link that may prove helpful:http://www.mass.gov/ago/consumer-resources/your-rights/civil-rights/housing/discrimination-against-tenants-receiving.html

Unlike tenant eviction which is handled at the District Justice level and is easy to do yourself without an attorney, Ejectments must be done in the Court of Common Pleas, and while you CAN do it yourself, in almost all cases you will need an attorney.If they are the former owners or a tenant with a lease, then they are not trespassers, and their removal is not a criminal matter but a civil matter that will not be helped by you calling the police or filing a police report. 

If you call the cops and tell them somebody abandoned a motorcycle in your rental, they will tell you this is a civil issue and hang up.

I would definitely check the docket for any prior litigation regarding the tenant and the property.

Litigation is expensive, in fact, very expensive.

http://money.cnn.com/2016/06/22/technology/airbnb-...from the article"This week, Los Angeles started to take action against rent-controlled apartments that have been illegally converted into short-term rentals The city filed criminal charges against the Farifax building's owners and civil cases against three other building owners.

Civil Code §1748.1 (a) No retailer in any sales, service, or lease transaction with a consumer may impose a surcharge on a cardholder who elects to use a credit card in lieu of payment by cash, check, or similar means.

You may need two, One that handles your real estate transactions and one that handles any construction related litigation and the use of mechanic's liens both for you and against you.

All police jurisdictions I am aware of consider landlord tenant issues to be a civil matter and will under no circumstances get involved.