A decade after the murder of MP Jo Cox, her sister has issued a stark warning that the forces driving societal division may now be more potent than ever. Kim Leadbeater highlighted the EU referendum campaign as a period of intense polarization, where fear was actively exploited and anger became a tool in political discourse.
Urgent Call to Reject Polarization and Hate
Leadbeater appealed to the public to actively resist the surge in polarization and hate, noting that these sentiments carry disturbing parallels to the climate surrounding her sister’s death. Jo Cox was tragically killed in her Batley and Spen constituency on June 16, 2016, stabbed and shot by neo-Nazi Thomas Mair, just days before the EU referendum vote.
Speaking ahead of the 10th anniversary of her sister’s passing, Leadbeater emphasized that it would be inaccurate to directly attribute Jo Cox’s murder to Brexit. “One individual committed that heinous crime, a far-right neo-Nazi whose evil act was his and his alone,” she stated. “But things don’t happen in a vacuum.”
Examining the Environment of Division
During the Jo Cox memorial lecture at Pembroke College, Oxford, Leadbeater asserted, “If we refuse to examine the environment of anger and polarisation that surrounded [Jo’s murder], then we fail both her memory and our democracy. And sadly, a decade later, many of the same forces are still with us. Perhaps even stronger.”
She described the current landscape: “Today, polarisation dominates public life. Across politics, media, and online platforms, people are increasingly pushed into opposing camps. Nuance disappears and every issue becomes a battle. Every disagreement becomes moral warfare.”
Remembering Jo Cox’s Legacy
The Member of Parliament for Spen Valley remembered her sister as “one of the nicest people you could hope to meet,” whose death profoundly affected people globally. “She was a politician, but she was first and foremost a passionate humanitarian – and a realist at the same time – always looking for solutions that were practical and achievable – and ways to bring people together, not drive them apart,” Leadbeater recalled.
The Courage to Unite
Leadbeater urged individuals to remember that “hatred grows when good people become indifferent to division.” She proposed solutions rooted in courage: “The answer to polarisation cannot be more polarisation. The answer to fear cannot be more fear. The answer must be courage.”
She elaborated on this call to action: “The courage to listen. The courage to speak responsibly. The courage to reject extremism. The courage to defend democratic values even when emotions run high. And most importantly, the courage to remember that we belong to one another.”
Leadbeater posed a critical question about the society we wish to build: “Do we want a society defined by outrage and suspicion? Or one defined by compassion and solidarity? Do we want future generations to inherit division? Or do we want them to inherit hope? The choice is ours.”
She concluded by suggesting the most meaningful tribute to Jo Cox would be to embody her principles: “And perhaps the greatest tribute we can offer Jo is not merely to repeat her words, but to live by them, and show that we really are ‘far more united and have far more in common than that which divides us.’”
Current Tensions and Echoes of Division
This address comes amid heightened public tension, particularly following the recent murder of student Henry Nowak. The circumstances surrounding his death, including a false claim by the perpetrator of being a victim of racial assault, and distressing bodycam footage of his final moments, have deeply affected the nation.
Following the sentencing of the killer, Vickrum Digwa, Henry Nowak’s father, Mark, appealed for his son’s death not to be exploited for further division. Despite these pleas, public figures like Nigel Farage have made statements that critics argue have fueled anger, leading to protests. US Vice President JD Vance also commented, attempting to link the case to migration issues, a connection that Downing Street rebuked, condemning attempts to “interfere in our democracy and seeking to stir up division on our streets.”

