Prompt: Write an Op-ed of approx. 700-1000 words for a journal or respected newsmagazine/newspaper. Be sure to take on a strong opinionated persona to capture the appropriate ethos. Pick a publication that best fits your topic.
To start, search for op-ed article in publications that might publish yours. Every one of them has an opinion section. Notice the differences in each publication. Some are short, and some are unusually long 2-6 part series. Images, graphs, charts, are all acceptable for visual evidence if you desire, and if the publication accepts them. Follow their submission guidelines for formatting.