Be cautious when using 'make light of' as it could hurt someone who takes the topic seriously. People might get upset if you make light of their religious beliefs.
Pro Tip 2/3
Serious Situations
Avoid 'making light of' topics when the context requires gravity and respect. During the memorial service, it's inappropriate to make light of someone's passing.
Pro Tip 3/3
Cultural Awareness
Different cultures may have varied sensitivities; research before making light of local customs. While abroad, he made light of a tradition and offended the locals.