[AnthonyMouse]

The greater risk is probably that if you succeed, it will cause the oil company's share price to decline dramatically. Which means you're essentially committing to losing the money. If you're willing to do that you might as well just donate the entire amount to advocating for a carbon tax to begin with, instead of only the dividends.

[sertorius]

Fair enough, but I doubt many individuals would be able to do much more than rein in the extremes - drilling in protected reserves, etc.