\"He took fall for the sin of this country\" I got real problem

What does Liang's conviction have to do with the sin of this country? can someone explain to me? The verdict was rendered in the court of law. I have trouble understanding it. 

Immidiately after this remark, she also said Liang should be held accoutable to his action which I agree. 

But which is it? Fall for the sin or accountability?

The girl has a very murky mind which is more suitable for comunity organizing, not any type of legal work as someone suggested