The bolded part is not referenced as per any source. Nor is it followed up in the actual text of the entry.
Contrast that to the section on the two men killed by police in the building, prior to the eviction, who are known and named.
Perhaps the vague unattributed statement:
"Veterans were also shot dead at other locations during the demonstration"
is true, but it does not provide any evidence, nor does it imply the circumstances (if it happened) nor does it indicate it was military firing on the Marchers during eviction.