If you are interested in the event, the people involved, or the inability of historians to gain access to Mormon records that would condemn or exonerate Brigham Young’s involvement, this is the thread!
Below is a wiki link that does not give full details, but does outline the events. I can recommend peer reviewed books on the topic if needed.
ONLY official Mormon church historians are allowed access to their collected data.
I found a few documentary vids that place strong evidence of blame upon the Mormons, and explain what happened pretty thoroughly. I’m sure that a lot of the direct evidence was hidden away and covered up.