Two free walking tours will be held at Merthyr Dyfan Cemetery to examine the background behind the 1919 race riots in Barry.
In June 1919, rioting broke out in several dock towns - including Newport, Cardiff and Barry, where the fatal stabbing of a labourer in Cadoxton led to three days of unrest.
The walking tours will examine how the riots were driven by high unemployment, insecurity and a fear of foreigners, witnessed killings, mobs on the rampage and a blind hatred for anyone of a different colour or creed.

The free event on Sunday 19th October, held by Barry Town Council and the Victorian Barry Experience as part of Black History Month, will be followed by refreshments at Merthyr Dyfan Chapel.
Donations will also be taken for the Town Mayor's chosen charities, Mind in the Vale and Valeways.
Talks begin at 12.30pm and 2pm but advance booking is required via Barry Town Council on Ticketmaster.

DES scheme returns for party season
Cafe owner 'over the moon' after parking U-turn
Bird flu case found in Cardiff Bay
Controversial parking charges suspended
Go ahead for £140m Cardiff Central revamp
Barry man fined after dog abandoned
Cardiff-Paris flights return for Valentine's weekend
15 arrested in knife crime crackdown
Penarth cup clash moved to Arms Park
Plans unveiled for Lavernock solar farm
Barry Town unveils new club strategy
Electrical fault started Penarth clubhouse fire
Survey launched on Cogan rail station
Sustainable Food Places award for Vale
Council chief set to join CCR board
Fire at Penarth Athletic Club