To put this firmly in every hand of the grassroots.
Pink News have offered up an image to download.
Watch the video
Put the pink news image in your preferred free app (see video)
Grab the dots at the corner of the Pink News images and made it bigger.
Proceed as per video.
I can give suggestions for free apps that add text if you don't want to hand write the message in the drawing app. But handwriting in the drawing app avoids problems with freebie apps altering your image and making it too low resolution to print well.
Zero drawing skills required. If you can trace, you can do this.
And if you can do this, you are off the skills leash for not just this, but for whatever other visual grassroots subversive fight back comes next.
It may take a little practice at first. But my art teacher nearly cried on a weekly basis at my utter inability to take on board all of her beautifully taught techniques and skills, and even I got the hang of the steps in the video quite quickly.
The Pink News image provides a nice simple design with a clear outline and solid block of colour for a dead easy fill in, just a few goes should do the trick.