Boycotts may or may not be a good approach to protest in the current disastrous political climate. However, various boycotts have definitely been suggested, and especially promoted by a group called "Grab Your Wallet." Here's their list of corporations and why this group suggests boycotting them: https://grabyourwallet.org/
Link to a brief description of this effort: "The Grab Your Wallet Movement Wants People to Boycott Donald Trump-Affiliated Retailers by Kerry Close.
Link: "Group Says It’ll Take LL Bean Off Boycott List If Company Takes Linda Bean Off Board" by Steve Mistler.
I'm more or less chagrined that I just made an L.L.Bean order this morning before learning about the boycott. I'm not sure what I'll be doing.