Conversation so far:
What was the strike of 1913-14 in relation to John D. Rockefeller?
The strike of 1913-1914 was spurred by a unionization effort against John D. Rockefeller's Colorado Fuel and Iron Company's working conditions.
What was the result of the stike of 1913-1914 in Colorado?
The strike of 1913-1914 resulted in miners being displaced and living in tent cities adjacent to mining towns.
What was the Ludlow Massacre?
The Ludlow Massacre was a massacre by the Colorado National Guard and Colorado Fuel and Iron Company guards attacking a tent colony of 1,200 striking coal miners and their families.
Why did the Ludlow Massacre happen?
On April 20, 1914, a general fire-fight occurred between strikers and troops, which was antagonized by the troops and mine guards.
Who was responsible for the Ludlow Massacre?
Colorado National Guard and Colorado Fuel and Iron Company guards perpetrated the Ludlow Massacre

Question: What was the result of all of this happening?
Self-contained rewrite: What was the result of all of the Ludlow Massacre happening?