Canadian doctors returned from Gaza almost certainly won't be killed on Canadian soil for speaking out, but there's a high likelihood they'll face professional consequences from hospitals (ie, employers) or their college (ie, professional organization). They'll probably be safer if they work at a community hospital/practice than a university-associated hospital.
I've found it troubling to see how the targeting of healthcare workers, women and children, and aid groups by the Israeli government in their 'war'/genocide has been completely ignored by the establishment - at least within the university and child health circles that I travel in - for the sake of demonstrating at least an appearance of staunch commitment to the delusion that Israel is not committing colonialist genocide. I wouldn't dare say something in real life, or challenge abstract references to the "protest" on campus. I'm in a more precarious than secure spot in terms of job and security, and it's a matter of survival right now.
I applaud the house owners around me that display "ceasefire now" signs on their lawns. And I applaud these physicians, if they're able, to supporting international justice with their testimony