Unfortunately I think today's terrorist attack is just a taste of what is coming.
The reality is that at some point the war in Gaza will come to an end. This is highly unlikely to be an end where Hamas win because that means Israel no longer exists, nor a deal where Hamas stay in power because that would simply mean a repeat of 7th October in a few years time.
So the war ends with the Hamas leadership in Gaza being removed from power. Now this can be done peacefully as proposed under the latest peace deal or if they refuse then forcibly which also means a lot more destruction and civilian deaths in Gaza.
In addition right now there are alot of people angry with Israel's actions in Gaza from pro Palestinian marches, protests, politicians being elected on pro Palestinian platforms, groups such as Palestine Action that not only attack British military equipment but also attacked a police officer with a sledge hammer and hospitalised her and lastly and more worryingly large numbers of people openly supporting Palestine Action despite it being a designated terrorist organisation.
Now finally getting to my point, when the war in Gaza finally ends, the angry protesters, pro Palestinian MPs, Palestine Action and their open supporters are not just going to go away and say well it's all over now. Instead they are going to remain angry at either the peace deal or the outcome of the war.
For a sizeable minority of them they will resort to physical violence or acts of destruction (which have already seen with Palestine Action) long after the war ends with support from angry former protesters.
It maybe a Jewish synagogue today but in the near future the physical attacks and destruction will spread to other parts of Britain.