Members of which group were tried for murder following the haymarket riot? labor unions strikebreakers police anarchists

Labor unions

Explanation:

The Haymarket riot was a riot that was initially intended to be a peaceful protest in Chicago. The protest was organized by the workers and the labor unions, as they were trying to force the companies to provide them with better working conditions and wages. The peaceful protest though sharply turned into a violent riot, as someone threw a bomb at the police officers, which in turn resulted in a violent riot. The evidence about how threw the bomb were lacking, but the authorities had decided that someone had to be charged for it, and they chose their enemies, the labor unions, so several radical members of the labor unions were charged for murder despite having no real proof for it.

the answer should be:

their party has more members.

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