 Over the next three months there were violent clashes , with local youths throwing stones at police . Violence came to a head on Saturday , 19 April after a planned march from Burntollet Bridge to the city centre was banned . A protest in the city centre led to clashes with " Paisleyites " — unionists in sympathy with the anti @-@ civil rights stance of Ian Paisley . Police attempting to drive the protesters back into the Bogside were themselves driven back to their barracks . A series of pitched battles followed , and barricades were built , often under the supervision of Bernadette Devlin , newly elected MP for Mid Ulster . Police pursuing rioters broke into a house in William Street and severely beat the occupant , Samuel Devenny , his family and two friends . Devenny was brought to hospital " bleeding profusely from a number of head wounds . " At midnight four hundred RUC men in full riot gear and carrying riot shields occupied the Bogside . Convoys of police vehicles drove through the area with headlights blazing . 
 Over the next three months <a href='dey_it' title='1'><mark>there</mark></a> <a href='uninflect' title='2'><mark>were</mark></a> violent clashes , with local youths throwing stones at police . Violence came to a head on Saturday , 19 April after a planned march from Burntollet Bridge to the city centre was banned . A protest in the city centre led to clashes with " Paisleyites " — unionists in sympathy with the anti @-@ civil rights stance of Ian Paisley . Police attempting to drive the protesters back into the Bogside <a href='uninflect' title='3'><mark>were</mark></a> themselves driven back to their barracks . A series of pitched battles followed , and barricades <a href='uninflect' title='4'><mark>were</mark></a> built , often under the supervision of Bernadette Devlin , newly elected MP for Mid Ulster . Police pursuing rioters broke into a house in William Street and severely<a href='been_done' title='5'><mark></mark></a> beat the occupant , Samuel Devenny , his family and two friends . Devenny was brought to hospital " bleeding profusely from a number of head wounds . " At midnight four hundred RUC men in full riot gear and carrying riot shields occupied the Bogside . Convoys of police vehicles drove through the area with headlights blazing . 
Over the next three months it was violent clashes , with local youths throwin stones at police . Violence came to a head on Saturday , 19 April after a planned march from Burntollet Bridge to the city centre was banned . A protest in da city centre led to clashes with " Paisleyites " — unionists in sympathy with the anti @-@ civil rights stance of Ian Paisley . Police attempting to drive the protesters bacc into tdaBogside was theyself driven back to their barracks . A series of pitched battles followed , and barricades was built , often under the supervision of Bernadette Devlin , newly elected MP for Mid Ulster . Police pursuing rioters broke into a krib in William Street and severely been beat thdaccupant , Samuel Devenny , his family and two frens . Devenny was brought to hospital " bleeding profusely from a number of head wounds . " At midnight 4 hundred RUC men in full riot gear and carrying riot shields occupied the Bogside . Convoys of police vehicles drove thru the area with headlights blazing .