Live long enough and you might find white becomes black and black white. That's an oversimplification, but it applies this week.
When I was young (1950's) those who took the Fifth Amendment were frowned upon--then they were often Hollywood radicals, what were called "fellow-travelers" of the Communist Party, possibly spies, and certainly people who deserved to be dismissed from their jobs, blackballed from the entertainment industry, and investigated, tried, and convicted, not necessarily in that order.
Meanwhile, the FBI was led by J.Edgar Hoover, renowned defender of the American Way against subversives, spies, criminals (except organized crime, since there was none), and deviants of all stripes.
Today of course the former guy has taken the Fifth and some in the Republican party want to defund or blow up the FBI.
Because the right has reversed their field, it tends to force liberals to reverse theirs: to condemn those who take the Fifth, defend the powers of government in investigations, and protect the FBI.