Take it down
Tell us which photo and why. You don't need an account, and you don't need to have been at the event.
If an intimate image of you was shared without your consent, we will take it down within 48 hours of a valid report, and remove copies of the same image we can find. That is the one promise on this page with a clock on it, and it is the one we hold ourselves to hardest.
Everything else — that's me and I want it gone, that's my photo and I didn't allow it, something else — goes through the same form and reaches the same person. Copyright complaints have some extra formalities: see the copyright page.
If you are in immediate danger, contact your local emergency services. This form reaches us, not the police.