It's one thing to be concerned about how something impacts your livelihood. When you insist on denying the facts then you avoid effectively dealing with real problems.
People whose livelihoods are effected by regulations should receive compensation as well as retraining, even a government-funded return to or entrance into college or vocational schools. Then we can regulate effectively and less people will complain.
Some people will do almost anything to protect their livelhood, including murder people. In fact some people are so ruthless that they will actually murder people for money. So it is not suprising, despite how tragic it is, that she was killed for speaking about such a devisive issue in Brazil
Lack of money, attempt to keep a certain income stream and the desire to get rich are all tied into and can feed anger and violence. People are more likely to fight over money and religion than almost any other subject. It's a darker side of human nature and it's very sad that the nun was killed, but it's not a surprise.
People are more angry and violent when their income source is questioned. Look no further than in the United States as an example. Unions routinely engage in violence when jobs or wages are threatened. Worse, look at the violence that erupts when the leeches of society find that welfare benefits might be cut.
People are more angry and violent when their income source is questioned because they feel put on the spot. If someone feels like another person is skeptical of them and what they are doing, it is natural for them to get defensive. Sometimes this leads to violence. This nun is the victim of tragic and unacceptable violence.