Great words from Nick Robinson on bbc website:
Cox – a popular and respected Labour member of parliament, a young mother and a campaigner for the rights of refugees – was shot and stabbed by a man outside her constituency surgery. She was vulnerable to attack because she was, like so many MPs, available to anyone who wanted to see her with any grievance.
Her death is a reminder that our elected representatives, who are so often demonised for living separate lives from the rest of us, actually all too often live in our communities, in our streets worrying about the same things that we do. Unlike us, though, they open themselves up not to just to criticism and abuse but to assault by those who disagree with them.
We do not know the exact circumstances of this attack. The police insist that it was “localised” ie not linked to any global terror threat. There are, though, suggestions that it was political. If that turns out to be true it is a reminder of one other thing too. The need at all times to respect those who disagree with us and to understand that anger, fury and rage are not the same as passion or belief.