The bitterness between the two organizations was most acute in the Butte (Mont.) mining fields. The situation reached a dramatic climax in the summer of 1914 when, on June 13, the Union Hall of Butte Miners' Union No. 1 (W. F. M.) was dynamited. The writer is not sufficiently familiar with the facts to tell this story in detail, or to express an opinion as to whether or to what extent the I. W, W. element in Butte was responsible for the dynamiting. The friction between I. W. W. sympathizers and the management of the local W. F. M. union--Butte Miners' Union No. 1--was unquestionably a factor in the quarrel which culminated in the dynamiting outrage. There were certainly other factors. The local organization had been gradually dividing into two factors--the "Reds" and the "Yellows." Among the "Reds," I. W. W. members and sympathizers predominated. The "Yellows" comprised the local officials of the union and their followers, and they were in a majority. It was alleged by the "Reds" that at the union meetings the administration element deliberately packed the hall with the "reactionaries" before the hour of opening, so that the "Reds" could not even voice their grievances. Then the hall was blown up. The administration accused the I. W. W. and pointed out that such a deed was to be expected of a group which avowed its belief in the doctrine of "direct action by the militant minority." The _Miners' Magazine_ declares that "the 'Red' faction composed of I. W. W. members dynamited the Union Hall."[645] At the last W. F. M. convention (1916), President Moyer said that the real cause of the Butte tragedy was the "poison the I. W. W. promoters were scattering" in the minds of the Butte miners.[646] A large portion of the two weeks' session of the twenty-first W. F. M. convention (Denver, 1914) was taken up with a discussion of the Butte dynamiting and the alleged complicity of the I. W. W. therein. One of the delegates related the following incident, which he said took place in front of the Union Hall in Butte a short time before the dynamiting: Three of the mob ... presented I. W. W. cards ... at the door and asked to be admitted to the meeting, and on being refused, one of them laid his I. W. W. card on the sidewalk, stooped down and patted it with his hand and said, "We will make you fellows eat that card before long."[647] Lewis J. Duncan, the Socialist mayor of Butte, declared that the I. W. W.s did not take part in the dynamiting. In a letter dated June 29, 1914, and addressed to the _United Labor Bulletin_ (Denver), he asserts that