Just to take this thread back to its roots (sorry, haven't RTT, but it seems to have gone a bit off-topic on the most recent bits I've seen), speaking as someone whose parents were refugees from Nazi Germany and my dad came on the Kindertransport, I do find the comparisons a bit annoying, although obviously there are some parallels.
I think the main difference for me that seems to be ignored is that the Jewish refugees really didn't have anywhere else they could go. Nowhere. That is why most of the parents of the children who came over on the Kindertransport died - they just couldn't get a visa to go ANYWHERE. Ships of Jewish refugees sailed from port to port and were refused entry everywhere. So it's a world away from the current Syrian refugee experience where a range of options exist, eg refugee camps, migrating to Europe, other sympathetic neighbouring countries etc.
The other main difference is that the Jewish refugees were no threat to anyone, whereas it's impossible to know, unfortunately, with the Syrian refugees if the perpetrators are mixed in with the victims - Jewish refugees were very clearly labelled, with compulsory yellow stars and the names 'Israel' or 'Sarah' added to their passports. There was no risk you were going to be accidentally letting in a load of Nazis. It is clearly the case that some terrorists have sneaked in with the refugees, as we saw in France, and it is difficult to know the background of most others.
Despite this, the British interned the Jewish refugees once the war started, as 'enemy aliens', in case they aided the Germans (I know it seems bizarre now to think they would have been pro-Nazi, but no-one wanted to be too careful). But my father and the other Jewish refugees who were locked up did not complain - they understood the context and were just so desperately relieved to have escaped, that they accepted it and made the best of it. Current refugees would be up in arms if treated like this - and indeed, appear to have reacted with violence on occasions when their free movement has been impeded.
Finally, the cost to the host countries is vastly different. Jewish refugees then were paid for entirely through private charity (Jewish and Quaker organisations, and individuals who agreed to take in a child). Now it seems accepted that the State must pay large sums to support all migrants (some of whom will be genuine refugees fleeing war and some economic migrants) and the latter complain if the conditions aren't as nice as they had been expecting; understandably, this annoys the host countries.
I worry that the fallout of the current situation may be that genuine refugees get less support in future, because of some of the factors mentioned above. I think genuine refugees should get proper support - but we should be clear about who we class as a refugee, about where the money is coming from to pay for this support, and about what standards we expect from all settlers in the UK, wherever they come from. I don't think it is unreasonable to expect us to examine people's claims to be seeking refuge, nor to be realistic about how many we can afford or the contributions the refugees themselves or the charity sector or kind individuals may need to make to make that number feasible. Genuine refugees will understand that and be grateful for any support they get.
Sweeping these issues under the carpet now is likely to lead to problems in the future.