This depends on how you discover music. Usually radio or top lists don't cover major political issues since it makes half their audience angry. Also it can take a bit to get a song written, recorded, mixed, mastered and released in most cases.

Im into metal and there are some artists that release amazing protest songs

Fox lake

• savior

Fit for an autopsy

• flat lining
• no man is without fear

Thy art is murder

• holy war
• make America hate again

Acrania

• dissolution in a discordant system