“Twitter sometimes feels like the ex-boyfriend I keep going back to,” June Johnson, 39, says with a laugh. “[I] question myself why because I know that it’s not always healthy but it is entertaining.” The social media lead at Sad Girls Club, a non-profit organization that works to support and destigmatize mental health care for women of color, Johnson is concerned how Elon Musk’s acquisition of Twitter could impact the Black women her organization caters to. And she’s not alone. When Elon Musk, the richest person in the world, finally acquired Twitter for $44 billion in October, after months of...