 As foreseen by Secretary Laird , fallout from the incursion was quick in coming on the campuses of America 's universities , as protests erupted against what was perceived as an expansion of the conflict into yet another country . On 4 May the unrest escalated to violence when Ohio National Guardsmen shot and killed four unarmed students ( two of whom were not protesters ) during the Kent State shootings . Two days later , at the University at Buffalo , police wounded four more demonstrators . On 8 May 100 @,@ 000 protesters gathered in Washington and another 150 @,@ 000 in San Francisco on only ten days notice . Nationwide , 30 ROTC buildings went up in flames or were bombed while 26 schools witnessed violent clashes between students and police . National Guard units were mobilized on 21 campuses in 16 states . The student strike spread nationwide , involving more than four million students and 450 universities , colleges and high schools in mostly peaceful protests and walkouts . 
 As foreseen by Secretary Laird , fallout from the incursion was quick in coming on the campuses of America <a href='null_genetive' title='1'><mark>'s</mark></a>universities , as protests erupted against what was perceived as an expansion of the conflict into yet another country . On 4 May the unrest escalated to violence when Ohio National Guardsmen shot and killed four unarmed students ( two of whom <a href='negative_concord' title='2'><mark>were</mark></a> <a href='negative_concord' title='3'><mark>not</mark></a><a href='negative_concord' title='4'><mark>protesters</mark></a> ) during the Kent State shootings . Two days later , at the University at Buffalo , police wounded four more demonstrators . On 8 May 100 @,@ 000 protesters gathered in Washington and another 150 @,@ 000 in San Francisco on only ten days notice . Nationwide , 30 ROTC buildings went up in flames or <a href='uninflect' title='5'><mark>were</mark></a> bombed while 26 schools witnessed violent clashes between students and police . National Guard units <a href='uninflect' title='6'><mark>were</mark></a> mobilized on 21 campuses in 16 states . The student strike spread nationwide , involving more than four million students and 450 universities , colleges and high schools in mostly peaceful protests and walkouts . 
As foreseen by Secretary Laird , fallout from da incursion was quick in comin on tdacampuses of America  universities , as protests erupted against what was perceived as an expansion of thdaonflict into yet another country . On 4 May thedarest escalated to violence when Ohio National Guardsmen shot and killed 4 unarmed students ( two of whom ain't no protesters ) durin the Kent State shootings . 2 dayz later , at the daversity at Buffalo , police wounded four more demonstrators . On 8 May 100 @,@ 000 protesters gathered in Washington and anotha 150 @,@ 000 in San Francisco on only ten dayz notice . Nationwide , 30 ROTC buildings went up in flames or was bombed while 26 schools witnessed violent clashes between students and police . National Guard units was mobilized on 21 campuses in 16 states . The student strike spread nationwide , involving more den fou4llion students and 450 universities , colleges and high schools in mostly peaceful protests and walkouts .