I am no fan of Country music, but if it's protest songs you want, you'll find plenty on the Country charts:
"The Last Fallen Hero" Charlie Daniels Band
"Uneasy Rider '88"       "       "      "
"America Will Survive" Hank Williams, Jr.
"American Soldier" Toby Keith
"Red, White, and Blue" Lynyrd Skynyrd
"The Great Defenders" Lee Greenwood
Of course, they aren't protesting what you want them to protest, but they ARE protesting.