And already on social media there are people trying to use it as an excuse to stir up racism and hatred before we even have a full picture of what happened or who did it This is where I don't like the modern 24-hours news culture - we don't need to see endless speculation and disturbing footage. Reporters need to focus on facts rather than chasing distressed witnesses. I will not put my TV on and watch that. I will minimise social media today because again, already there are people sharing clips without thinking of the distress they will cause.
I hope that the missing people are found. My heart goes out to the families of those who have died.
Equally, I hope this does not put people off coming to concerts. Security people do the best job that they can with the resources that they have. We should remember that. They can't predict everything. They can't always stop everything, but they do their best.
The city of Manchester has faced this kind of thing before in the 1990s when it was bombed by the IRA - the people of Manchester rebuilt and carried on and did not give in to hate or fear or negativity. I would like to hope that we will keep that attitude and not be panicked by media sensationalism.