On April 27, O'Rourke held a rally at Los Angeles Trade-Technical College where he delivered condolences for the Poway synagogue shooting that occurred hours earlier and pledged that they would support their words with actions to ensure that "in this country that sees more than 30,000 gun deaths every year, a rate not seen anywhere else in the world, that we will insist on universal background checks for everyone, without loopholes or exceptions."