His previous actions/views?

1) no one knows what his views on "terrorist organisations" are because he's never made them public.

2) He has met with various leaders of what have variously been described as terrorist organisations over the years.

Corbyn realised a long time ago that even armed conflict can only be truly resolved through political dialogue, so why not cut out the middle-man of war and just start talking? He invited Gerry Adams to parliament long before the Good Friday Agreement was even mooted.

As for politicians smooching with despots, the subject of you avatar was a pass-master

Do you also find self loathing therapeutic as well as despising individuals less fortunate than yourself?

You mean running their own business?

You said people should get off their backsides and do something to change their situation.
Does that include working together with others to improve many peoples working lives?

The thing is, if all these people "got off their backsides, and achieved" then the world would essentially grind to a halt. Who would stack the shelves in the supermarket? Who would load the luggage on to the planes at the airport? Who would process the invoices for all the "achievers"?
What would happen if developing commodity exporting countries, and the workers within those countries working for peanuts because they don't feel they have another choice suddenly realised that they're being bent over, and actually started charging a more appropriate price for their labour, commodities?

The fact is, big business needs a significant amount of unskilled labour to pick from to exploit. It needs a high level of poverty, and corruption in developing countries to keep their import costs down.
Governments need people on welfare to buy votes. Big business needs government, to be able the pass legislation that favours their interests.
There're are definitely people in society who are parasites, and exploit the system, but many of those people are the ones who designed the system in the first place.