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PA via the Associated Press
In this grab taken from video, Labour leader Jeremy Corbyn speaks in the House of Commons, in London, Monday June 20, 2016. British lawmakers returned to Parliament Monday to pay tribute to lawmaker Jo Cox, as the man charged with her slaying made a brief court appearance by video link from prison.

LONDON — The raucous business of Britain's House of Commons was replaced by somber silence and heartfelt tributes Monday for slain lawmaker Jo Cox, while the man charged with her slaying made a brief appearance in court by video link from prison.

Lawmakers lined the benches and stood in the aisles of the House for a special session in Cox's memory. Some wiped away tears, and each wore a white rose, symbol of Cox's home county of Yorkshire.

Parliament was in recess for campaigning in the European Union referendum when Cox was shot and stabbed to death outside a library in her northern England constituency on Thursday. The suspect, Thomas Mair, gave his name during a court appearance as "death to traitors, freedom for Britain."

The killing — the first of a sitting British legislator in more than a quarter of a century — prompted an outpouring of shock and grief, and brought a three-day halt to campaigning for this week's referendum.

"An attack like this strikes not only at an individual but at our freedom," said Speaker John Bercow, who recalled the House from recess to allow lawmakers to honor their colleague.

"That is why we assemble here, both to honor Jo and to redouble our dedication to democracy."

Cox was a former aid worker and Labour legislator who had championed the plight of Syrian refugees and strongly backed a "remain" vote in Thursday's EU poll.

Her death brought promises to tone down the heated political rhetoric that has marked the referendum campaign.

Labour leader Jeremy Corbyn said that in the wake of Cox's death, "we need a kinder and gentler politics."

"We all have a responsibility, in this House and beyond, not to whip up hatred and sow division," Corbyn said.

The House is generally recalled only at times of crisis or high significance. The last time it happened was in September 2014, so lawmakers could vote on whether to launch airstrikes against the Islamic State group in Iraq.

On Monday, Cox's friends and colleagues remembered her warmth, energy and principles, as her husband and children aged 5 and 3 watched from the public gallery.

"Jo Cox was a voice of compassion whose irrepressible spirit and boundless energy lit up the lives of all who knew her, and saved the lives of many she never, ever met," said Prime Minister David Cameron.

Mair, who was arrested shortly after the attack, appeared at London's Central Criminal Court on Monday by video link from high-security Belmarsh Prison. He is charged with murder, grievous bodily harm, possession of a firearm and possession of an offensive weapon.

He did not repeat the "death to traitors" outburst he made during a hearing on Saturday. Asked if he was Thomas Mair, he replied, "Yes, I am."

His lawyer did not seek bail during the brief hearing. Mair was ordered detained until his next hearing on Thursday.