fear manifests irrationally when control is beyond reach, including wishing the death of someone they don't know other than via press snippets (which is not to say bolsonaro is a saint, but most of us in the US know next to nothing about him except "bad").
driven by fear and the resultant impulse to control, a priori arguments are made for all sorts of interventions, because it's so hard to accept that the most effective, balanced measure is simply to distance a bit from the less-acquainted, and when we can't, wear a mask.