Is there a standard way of flying a flag of a nation in a way that represents the people rather than the state?

There's a nationality that has been hounded in my country by huge volumes of derogatory disinformation. I want to wear a flag pin supporting those people. But, their government at home is tyrannical and I'm not a fan of using the national flag for that reason. I'm struggling here with a way to clearly and visually show my support of this community.