你这是什么意思？你上次不是说你不会忘记天安门而且必定找回民主主义吗 

what do you mean by this

You said last time that you will not forget Tiananmen and that you will surely restore democracy.

上次说要为香港示威加油的是什么? 

So what did you say you were supporting the Hong Kong protests?

赞成维吾尔族人独立,欢迎啊 

It is welcome that you are in favor of independence for the Uyghurs.

看你用韩语说怀念刘晓波,你是好人啊 

Seeing you say in Korean that you miss Liu Xiaobo, you are a good person

你用韩文问过"想知道西藏人民是怎么被共产党镇压的吗?" 

Did you ask in Korean to know how Tibetans were oppressed by the Communist Party?

在这里见到"法轮功"修炼者,真高兴。 对下一个集结地应该很清楚吧? 

It's so nice to meet a Falun Gong practitioner here.

Do you know the next meeting point?

习近平领导的反对独裁"的演讲用韩文写的好听了。 现在是付诸行动的时候了。 

I enjoyed listening to the speech written in Korean against Xi Jinping's dictatorship.

Now is the time to take action.

小心被当局逮住 ... 工作一结束手机就销毁 

Be careful not to get caught by the authorities... make sure you destroy your cell phone when you're done