Any chance that Democrats have of capitalizing on controversies at the Republican National Convention have been severely limited, writes Brian Karem for Salon, in large part because the ongoing Democratic Party panic and bid to push President Joe Biden out of the race is continuing to consume all the oxygen. “The Republican freak show has gathered in Milwaukee this week to canonize and coronate Donald Trump, fresh off his felony conviction and a recent assassination attempt,” wrote Karem. “While there you can purchase your favorite Trump T-shirt, or for just $29.99 you can purchase one with Tr…