Even Kass is one of the MD in the open letter. Should someone send a open letter to him and demend an apology?

Mr. Kass:

Now that Dr. Xiao has confessed and is convicted for the crime, do you have any comments in regards to your statement?

clearly you have showed a very poor judgement on this matter, and it should not be too much to ask you to apologize to Mr. Fang.