The Independent has a couple of articles about the rise in racist incidents in the aftermath of the referendum vote (HERE) and (HERE). Boston seems to be one of the worst places in the UK but it certainly isn't limited to Lincolnshire.
There has been a huge rise in the number of immigrants to agricultural and fruit canning areas like Boston and one can imagine there might be an increase in tension because of added pressure on local services - but this is not an EU problem, this is down to government spending cuts and exiting the EU market may have the effect of cutting government revenues further.
