On suspicious sites, do not enter your email to unsubscribe: this is how spammers check the relevance of email databases.
If you find violations, send the URL to email: abuse@shortest.link
If you followed a link from social media, please leave a comment on the original post to alert other visitors.
And if all is well, then put "Like!"
Long link:
https://www.facebook.com/events/3157092034508327/?acontext=%7B%22ref%22%3A%2252%22%2C%22action_history%22%3A%22[%7B%5C%22surface%5C%22%3A%5C%22share_link%5C%22%2C%5C%22mechanism%5C%22%3A%5C%22share_link%5C%22%2C%5C%22extra_data%5C%22%3A%7B%5C%22invite_link_id%5C%22%3A405113528408876%7D%7D]%22%7D