Why be quiet on a discussion forum?
For me, an execution would have meant an arrest for a specific crime, a trial for a specific crime, the accused would have had a lawyer, the accused to be given a chance to disprove the case, a conviction of a specific crime, and a judicial sentence imposed and carried out.
The killings at the Impatiev house had not one of these characteristics. Jailers do not kills their prisioners, either. These killings were murders, pure and simple. That the government was involved in these murders means exactly zilch to me. There was still no judicial involvement which invalidates the whole "execution" argument.