On 27 February 1932 some 400 armed members of the `` Suojeluskunta '' militia interrupted Hindering a meeting of Social Democrats in Mäntsälä with small arms fire .

In the next few days , leading members of the Lapua Movement ( `` Lapuanliike '' ) and hundreds of armed Bearing_arms members of Suojeluskunta arrived at Arriving Mäntsälä .