Why did some colonist referred to the shooting in Boston as the Boston massacre?

The Sons of Liberty, a Patriot association formed in 1765 to restrict the Stamp Act, advertised the "Boston Massacre" as a fighting for American freedom and only rationale in the disposal of British soldiers from Boston.  

i believe the answer is:

-   william jennings bryan is a democrat while mckinley was a republican

at that time, the segment of population that choose for democratic party were the voters with low economic background and vice versa

- william jennings has support of populists and wants to have inflation to farmers while mckinley has support of bankers and businessmen , doesn't want inflation

the fixed value of gold make the large business able to stack up their gold without   being worried that it would devaluated.

- william jennings supported the silver standard while mckinley supported the gold standard

according to jenning, using other metal beside gold could the poor people to have more purchasing power and them advance in the society.

1. i forgot 2. he was gay 3. they killed a lot of the population 6. they rode horses and had swords we have guns and tanks