Calling Native Americans "Indians" is more of a misnomer than anything. Eh, we're digressing.
Yes, it is hard to act lawfully sometimes. This is especially true when what is lawful doesn't coincide with what is right. It is also hard when so much is stacked against you, like the situation you just described.
We supposedly live in a country that looks-out for minority rights. You are part of a minority, from what I understand. You're part of a persecuted minority, at that. Usually when the US (being the proclaimed "World Police" force) doesn't respond to the mistreatment of a minority, the world deplores the US for it. Social pressure usually encourages arrangements for the minority in question to be heard-out and given respect. That, however, is sadly not the case with your people. You've largely been abandoned by all but a few. Your fight for respect and acknowledgement will be a tough one, but also a glorious one, with nigh all the world against you. If you do go down in your fight for right, God willing, the children of the future will look back and see what you truly stood for and how your desire for respect and freedom was not unlike the desire of any other group of people. A tear would be shed for both the trampled, righteous few and for the ignorant who were blinded by the dirty trick that the tyrants pulled on them. "Why?" the children will ask. "Why couldn't the poor fools see the truth? Why did the World betray that band of their human brothers that just wanted freedom and respect like the rest? Why? Why was the cause of freedom forsaken?"
But....the fight is not yet over.