A picture says a thousand words. Why would we keep them out of a debate? Why not have the top 10 pictures that support AND oppose the same issue.
In a similar way I want to use an algorithm to rank the top images that agree and disagree with different positions.
For political positions, political cartoons might be used. In this case you might have the top 10 political cartoons for a presidential candidate in one columns, and the top political cartoons against a presidential candidates in another column.
For instance, the issue of Drug Legalization: