In March, the Trump administration abruptly froze about $75 million in funding granted to Radio Free Europe, a broadcaster that is a crucial source of uncensored information for people living under oppressive regimes without a free press. Now, @rem, whose 1983 hit “Radio Free Europe” is named after that organization, is remixing the song and giving all of the proceeds to the broadcaster: “It’s important to democracy and it’s important in a fight against authoritarianism that they remain.”