expansion of online harassment coincided with the increase in offline anti-semitism. the study specifically pointing at fringe internet communities, including gab, wolf, where anti-semitism messages begin and quickly spread to the mainstream. wolf. >> horrendous situation indeed. drew, thank you. drew griffin reporting. coming up, the white house angrily denies it, but was the pittsburgh synagogue gunman inspired in any way by the president's incendiary rhetoric? and with the massacre of jewish worshippers and the mailing of pipe bombs are hate crimes and extremism on the rise right here in the united states? stay with us. you're in "the situation room." today, 97% of employers agree that skills like teamwork, attention to detail, and customer service are critical to business success. like the ones we teach here, every day.