Is that a residential neighborhood, looks like condo's or apts? Is that where you live? If so, try a different angle go after the HOA or association that contracted them especially if you were not served notice of the work or advised not to park in certain areas. The roofing company has to have insurance or bonded show them the pics the police cant do anything this is a civil matter. There are basically 3 options and youve exhausted 1 already. Another is to go through the contracting agent for them and the third is court but in court your burden will be difficult to prove that damage didnt exist prior and more specifically they caused it, that will be tough to prove as most of that "looks" like normal wear.

Good luck