Pent-up frustrations from job losses and months of isolation during the coronavirus lockdowns played a role in the riots across the country, according to psychologists and pandemic researchers.“I do think the pandemic aggravated things,” said historian John Berry, who has written books focused on past pandemics.Tension built up during the lockdowns due to the massive joblessness — especially for those making less than $40,000 a year, African Americans disproportionately getting sick from the virus, and people being shut in the house for months, Berry said.“One can't understate the role of...…Pent-up frustrations from job losses and months of isolation during the coronavirus lockdowns played a role in the riots across the country, according to psychologists and pandemic researchers.“I do think the pandemic aggravated things,” said historian John Berry, who has written books focused on past pandemics.Tension built up during the lockdowns due to the massive joblessness — especially for those making less than $40,000 a year, African Americans disproportionately getting sick from the virus, and people being shut in the house for months, Berry said.“One can't understate the role of...WW…