Tyre Nichols' family has watched video of his arrest by Memphis police just days before his death, city officials say

Please adhere to the following guidelines to make sure you keep yourself and others safe.

• Always confirm via messages that the person is who they say they are.
• Feel free to contact them first or have a call to make sure they verify their identity.
• Never reveal information like where you live - have packages delivered to a local pickup point if you would prefer.
• Try to meet in public places in the daytime.
• Always take a phone with you, and if you can don't go alone.