There is apparently a lot to fear out there...
"Redscale" film is film that has been wound into the film canister backwards. For color negative (print) film, this means shooting through the orange plastic backing of the film to sensitize the emulsion. As a result, you get a strong red color shift. Usually, you must also compensate for light loss by at least two stops.
You can buy pre-redscaled film from Lomography, or you can do as I did and roll your own. Google it, or follow this tutorial: soup.create52.com/technique/redscale/
Unfortunately, this process might have dislodged some of the felt light seal, making my film dirty.
Camera: Canon AE-1 with f/2.8 28mm lens
Film: Redscale Fuji Superia X-Tra 400, rated at ISO 50
Taken at the Rally To Restore Sanity And/Or Fear in Washington, DC