"we're back" is a high quality video posted by SiIvaGunner2. It serves to announce the lifting of the copyright strikes against the main SiIvaGunner channel, allowing the channel and its videos to once again be usable and publicly accessible.
This is a followup to "An Essential Announcement".
We see a clip from the video for "Crab Rave" by Noisestorm played backwards, with this text in the center a la the OBAMA IS GONE!! meme, but with a default font and no formatting:
- The first link in the description didn't work until two days after the video was uploaded.
- The thumbnail image is an edit of a Russian meme (reposted example from Reddit) that dates to as far back as July 2017 (Tumblr post). According to @w00t000, this meme comes from toonlink, although the first instance of the image with "YEAH" appears to be VvvvvaVvvvvvr's "yeah".