Mine Workers' Union of Canada
... that in 1931 three people were killed in Estevan, Canada, when police opened fire on a Mine Workers' Union of Canada rally?
... that in 1931 three people were killed in <a href="./Estevan" id="mwBRw" rel="mw:WikiLink" title="Estevan">Estevan</a>, <a href="./Canada" id="mwBR0" rel="mw:WikiLink" title="Canada">Canada</a>, when police opened fire on a <b id="mwBR4"><a href="./Mine_Workers'_Union_of_Canada" id="mwBR8" rel="mw:WikiLink" title="Mine Workers' Union of Canada">Mine Workers' Union of Canada</a></b> rally?