DMCA requests.

Valid requests are reviewed within 24–72 hours. Processing may require clarification from the copyright owner or an authorized representative.

What to include

Identification of the copyrighted work and proof of ownership or authority to act.
Exact release URLs and the specific material covered by the request.
Your name, organization and a working email address for follow-up.
A good-faith statement and a statement that the information is accurate, made under penalty of perjury.
Your physical or electronic signature.