04/17/2013 10:23 am ET Updated Apr 17, 2013

10 Controversial Environmental Ads That Will Blow Your Mind (VIDEO)

Imagine police arresting civilians for not properly composting. Or polar bears falling from the sky. Or even homeless animals committing suicide.

All these shocking scenarios were used in the ads below to drive home points about environmental issues, often to either encourage green activism or to parody it.

Even though these spots got people buzzing, the effectiveness of “shock tactics” is a point of debate. Case-in-point: Arizona State University researcher Bob Cialdini found that the iconic “Crying Indian” PSA may have undermined its own anti-littering message through the sheer dramatics of the commercial. However, that same ad won two Clio awards, and some people believe that it directly contributed to the development of the environmental movement.

Whether purposefully brazen, accidentally offensive or just shockingly tragic, below are 10 of the most controversial ads about the environment.

Did you see a shocking ad that we left off the list? Let us know in the comments!

Controversial Environmental Ads