This is outrageous "Tsunami Democratic" has not coordinated any terrorist attack nor has an attack taken place in Spain... They are abusing antiterrorist laws to quash peaceful protests and GitHub is complying.
There are the CDRs, PicnicxRepublica, Omnium, ANC,... And probably many more.
In fact there are suspicions about tsunami not being "good enough" by some independentists.
Don't attribute to one what comes from another.
Anyway, there's a huge leap from riots (and, please, look at riots in other countries...) to terrorism.
Either way, GitHub is only complying with Spanish law, and that laws existence is not GitHub's fault, but the fault of the spanish people.
No “abuse” necessary: this has been the plan all along. It’s taken a little longer than expected, but things are finally falling into place now.