The conservative provocateur who calls himself Sabo took aim at Hollywood days before the Academy Awards. With a nod to the Oscar-nominated Three Billboards Outside Ebbing, Missouri, conservative street artist Sabo has hijacked three billboards in Hollywood to attack the entertainment industry for allegedly shielding pedophiles. Reminiscent of the signage in the Martin McDonagh film, which is up for seven Oscars including best picture, with black text on a field of red, three consecutive billboards in Hollywood sprang up Wednesday, each calling out the industry. “And the Oscar for biggest pedophile goes to…” reads one sign. Another says, “We all...