This week marked an important milestone in the separatist campaign in Alberta. After months of getting people to sign their petitions to trigger a referendum on independence, the separatist leaders submitted their signatures to Elections Alberta for verification. But Elections Alberta cannot count the signatures right now.That’s because of a court injunction that was put in place last month while a judge considers whether the treaty rights of some First Nations have been violated. It’s one of many legal challenges the separatist movement in Alberta is facing. Matthew Scace is a Globe reporter based in Alberta. He’ll explain the two major cases against the separatists, and what the leaders say they’ll do if the courts don’t rule in their favour.