When Muslim soccer star Mo Salah joined Liverpool, hate crimes in the area dropped 16% and anti-Muslim tweets from fans fell by half. By becoming a beloved "in-group" hero, Salah changed the group's norms to be more inclusive of his religion.

fMRI studies reveal that the brain's empathy circuits respond significantly less when seeing a member of an "out-group" in pain. This effect is so strong it appears even when the groups (e.g., "Justinians" vs. "Augustinians") are created arbitrarily via a coin toss moments before.

True empathy doesn't require having lived through the same event. It's the ability to connect with the underlying emotions—grief, fear, joy—that you have experienced. In fact, having the identical experience can sometimes lead to empathic failure because you assume their reaction must be the same as yours.

Humans have a natural inclination towards tribalism, which can be destructive. Sports provides a safe and contained framework for these instincts, allowing people to channel their 'us vs. them' mentality into a game with low real-world stakes, fostering community without causing actual harm.

Contrary to media portrayals, crises don't typically cause selfish panic. Instead, the shared threat creates a powerful 'emergent identity.' This fosters immediate solidarity and allows groups to cooperate effectively to solve problems, such as rationing supplies or organizing rescue efforts, by focusing on their common fate.

Echoing Carol Dweck's work on malleable mindset, empathy is not a fixed personality trait but a skill that can be intentionally developed. Just as one strengthens muscles at a gym, individuals can practice and improve their capacity for empathy and connection through consistent effort.

After losing his brother in a car accident, the author's family developed a much deeper empathy for the families who lost children to drug overdoses or AIDS. Their shared pain created a bridge of understanding that abstract sympathy could never build.

The hormone oxytocin has a double-edged effect. While it boosts bonding for one's own group, it simultaneously makes people less caring towards outsiders. This highlights the deeply tribal nature of our empathy, showing that biologically, turning up in-group care can also turn up out-group hostility.

Psychologist Jamil Zaki frames his childhood navigating his parents' acrimonious divorce as an "empathy gym." This reframes empathy not as a fixed personality trait but as a muscle that strengthens through deliberate, often challenging, real-world practice.