Other Poster Ideas

I tried another idea, using the trash-bin window to show the deletion of our past and history. I used simple icons to represent the history, culture and items associated with them. I put a caption underneath each one as a title, so that they become like items one would see in a computer Trash bin.
I changed the text in the pop-up window that asks you to confirm your deletion so that it makes sense with the topic and becomes a sort of tagline. It now says "Changing the flag also removes these items. Are you sure? You can't undo this action, John Key." This gets the idea across that changing the flag affects more than just the flag itself, but it will have a wider influence on our culture and the way that we perceive our history.
The current New Zealand flag forms the background for the trash window because it is the overarching subject matter, and it shows that the flag change/deletion is the over-arching, main idea.
As a poster though, this image doesn't work so well - there is a lot of white space, the composition is not eye-catching, and it won't stand out from a crowd of posters at a distance.

Ihi: Uses juxtaposition of the trash bin, a well-known tool for deleting/removing items, with the flag, which puts a clear point across about what may happen to our current flag.

Wehi: It's a window that makes you evaluate what you are about to do carefully when you see it, because if you get it wrong and delete things by mistake, they never come back. This draws people's attention to consider carefully what this change will do, and the impact that it will have. They feel uncertain as to whether changing it is really a good idea, as brought about by the sentence "Are you sure? You can't undo this action."