Reddit mentions of World Jerseys Men's Don't Tread On Me Cycling Jersey

Doesn't sound unusual. The law (vehicle code) is on your side but physics aren't so be vigiliant and ride defensively as you would in the city.

Do what you can to skew the odds in your favor (daytime lights, high viz. clothing, etc. ) so that the people who don't want to hit you can see you.

You can do a little to make the bike hostile to be less likely to categorize you as one of those "bike wankers" if you leave the matched kit at home and ride in something that looks more like street clothes, perhaps with your nice padded shorts/underwear hiding below. I've even thought about an apocryphal NRA jersey or this Gadsden Flag themed jersy for really rural areas.

Helmet cams are cheap enough to consider as a additional measure. They'll record unintentional behavior and keep a record of incidents or close calls. A running camera might also help ensure the civility of the rare driver that wants to actually get out and start a fight which has happened to me while riding in Pierce Co.