Yes, I would just say that over the past five years there have been a number of violent incidents involving Uighur or suspected Uighur perpetrators, but it's really important to note that the “Strike Hard” campaign's broad mandate to punish and control all of the Muslims in Xinjiang can't really be justified in the name of public safety.
The stated goals of the “Strike Hard” campaign are state security, ethnic unity and social stability, but we know very well that these are overly broad terms that the Chinese government often uses to crack down on any political expression.