Coming from a different angle. Colston was a business man and philanthropist funding many things for the people of Bristol. At the time he lived the slave trade was seen as a respectable business, and he was highly regarded. To judge him by todays standards is futile, he was of his time. Both sides of his story should be treated with respect or if you want disgust, but his generosity to the people of Bristol should not be ignored. There are a lot of people throughout history with a chequered life, they were of their time we should not judge them by modern standards.
How far back will some people go for retribution, should Britain claim against the Vikings for selling Britons in the slave markets of Dublin or the Romans for taking our people to Roman slave markets.
. Those 'demonstrators' should have been found guilty of criminal damage and punished. The past is the past, study it by all means, but leave it there