It does not apply. Many vocal Westerners don't find an enemy of their enemy (the USA way to capitalism or to imperialism or pick your -ism) in Sudan so there are no votes to gain, careers to foster, people to gather in protests. "The enemy of my enemy is not my friend but at least is the enemy of my enemy" effect is totally lacking. Who do you protest against? Russia, Saudi Arabia, Iran? As a public figure said in my country about the protests for Gaza, "we protest against our government."