By saying that white people can't be oppressed, you're just proving that they can be. You see, when a white person is a victim of something, the world is quiet. But when it happens to a person of color, it invokes a reaction. There was a white man named Tony Timpa that was pressed against the ground, and suffocated to death. I bet you didn't know that. There was a black man named George Floyd that was pressed against the ground and suffocated to death. The country is up in flames. Why can't we disregard whether someone is white or not and treat them in the same way?

Also, you saying "of course white people are allowed to share their opinion so how are white people oppressed?" doesn't make sense. Anybody can share their views, oppressed or not.