In light of what is currently happening concerning freedom of expression where Nigerian soldiers have been drafted to confiscate Newspaper articles the govt don't like, I think IPOB members and supporters, both in Nigeria and abroad got to sue this govt at the Hague for infringing on their fundamental human rights to association, peaceful assembly and free speech.
Right to Self Determination and freedom of experssion are cardinal articles enshrined in the United Nations Chatter of human rights, the very chatter Nigeria is signatory of.
Nigerian govt cannot hide under any guise to infringe on citizens rights to freedom of expression. By virture of Nigeria's membership to United Nations, International law and the Chatter for Human Rights which were drafted under the auspices of United Nation supercede whatever law Nigerian govt is using to justify its actions.

Seconded

I have not seen an oppressive Government like that of Buhari since the days of Abacha almost 20 years ago

If Quebec and Catalonia supporters can go about their business without any harassment, why can't Ipob members be allowed to do same

it pained me so much that I help campaign for this administration during the last election.

Of couse I understand that S.2(1) of 1999 Nigerian constitution states that; ''Nigeria is one indivisible and indissoluble Sovereign State to be known by the name of the Federal Republic of Nigeria''.
However by virture of Nigeria's signatory to Articles of United Nations Chatter on Human Rights, Section 2 subsection 1 of the 1999 constitution is subservient to International law. That section itself is a contradiction to articles on human rights.
You can't claim to be a respecter of human rights on one hand then stiffle Freedom of Self Determination on the other.