After actor Julia Louis-Dreyfus announced that she was diagnosed with breast cancer last month, the “Veep” star continues to document her journey publicly. In a new Instagram post Thursday, she shared that she had just undergone a second round of chemotherapy with a photo of herself hooded, with sunglasses, a drawn on mustache and a comically stern and tightlipped stare very much in the mold of the Unabomber, Ted Kaczynski. Louis-Dreyfus also quoted Katy Perry’s “Roar,” perhaps signifying her soundtrack of choice as she takes on cancer.