Currency is your sure vote to influence the world around you. Buy a Big Mac and get more McDonalds in the area. Buy ready-to-go meal from a small size cook and support his family. Buy a share of a company, and become a shareholder, investor, provider of cashflow for the company. You can also vote against the company buy supporting their competition, or betting against the company on the market.
However, there are additional ways as well.
For example if you want to vote against big oil, yet profit from expected gains in their market share, you can buy the minimum amount of company stock on the market, which will oblige the company to report their financial results in full writing every quarter. This is a legal requirement, and there are obliged to provide you this information. If we take an example stock price of $20, and resources required to print legally binding financial statement amounting to $1 per copy, damages amount to $4 per year, or 20% of the original stock price. Rallying massive 1-stock purchasing waves via crowdsourcing can be a sure way to a popular vote, or class-action against a company for braking the law.
Morale can flex either way.