you can appear in person before the HC.
but it will be better to approach the court through some good lawyer.
unless and until you are having detailed knowledge of the judicial pronouncements on the matter and the porper procedure being adopted before the courts it will be risky to appear in person.
its not merely a matter of speaking out in the court room, what matters is what to speak!
Court is not a platform either to be social hero or to deliver speech on a particular matter.
I am not discouraging you but prior to taking any such action just ensure whether you 're able to make out some case.