That is a sad apologetic based on bad facts. The article from the OP:
A Century After The Race Massacre, Tulsa Confronts Its Bloody Past
The massacre had been sparked by reports that a 19-year-old Black man had allegedly offended a 17-year-old white female elevator attendant. The murky incident got blown out of proportion by inflammatory newspaper accounts.
The newspaper inflamed it to "rape" and a white crowd descended on the jail demanding the young man be given to them to lynch.
Mass Grave Unearthed in Tulsa During Search for Massacre Victims
The 1921 massacre began after white people tried to lynch a young Black man over allegations that he had attacked a young white woman who was an elevator operator at a drugstore. The man was cleared, but when a group of white men converged with a group of Black men at a police station, shots were fired and a fight broke out.
Your first sentence was wrong. The young man did not rape a white woman.
It wasn't just burning down "a portion of the city" - it was the utter destruction of the wealthiest black neighborhood in the town, referred to as
America’s Black Wall Street.
from the OP article:
According to the commission's report, the massacre destroyed some 40-square blocks in Greenwood. Nearly 10,000 people were left homeless as 1,256 homes were looted and burned down. And the thriving commercial district was destroyed — some of the finest Black-owned and operated businesses in the country, including hotels, restaurants, grocery stores, a theater, a roller skating rink, hospitals and doctors' offices, law firms and churches.
Mass Grave Unearthed in Tulsa During Search for Massacre Victims
When the carnage was over, the unofficial count of the victims ranged as high as 300. Officials forbade funerals and buried the victims hastily without death certificates or other records.
It wasn't just 10 white men and 26 blacks.
There is no defense for this. It was ungodly, unChristian hate that led to the deisre to lynch the young man and then attack a prosperous black neighborhood and utterly destroy it.