What is the religious ruling on attending mixed-gender sporting events (such as Taekwondo) if women are seated separately at the back of the hall and music is stopped upon request? And is a friend's objection and reprimand for this considered "anger for the sake of Allah"?

Practicing physical and mental exercise is permissible as long as it does not violate Islamic law by exposing 'awrat (parts of the body that must be covered), mixing of men with non-mahram women, listening to music, or wasting time. Bowing or prostrating to anyone other than Allah is also forbidden in it. If the women are immodestly dressed or some men do not cover their 'awrat, then it is obligatory to avoid such a place. As for the rule, "Necessities permit the forbidden," it does not apply here, because practicing sports is not a necessity, and it can be practiced within Islamic guidelines. One must also fear Allah, foster harmony, beware of the whisperings of Satan, and speak in a calm, friendly, and scholarly manner, while avoiding division, rancor, and anger.