I got the Wong joke from the Readers Digest over 20 years ago.  

Then ultra-left weasels and wackos were insufficiently mobilized to be able to play the race and discrimination and other overblown (oh no, is over blown an anti-gay joke?) accusations against any and all conservatives.  This, finally, has led to an opposite and equal reaction called the election of Donald Trump.  Good.

As to people from all backgrounds feeling welcome in the CPC,  Michael Chong is running for the leadership, the Conservatives won the highest vote % of new immigrants in the 2011 election and in 2015 had a slightly higher % of support from new Canadians than from so called old stock Canadians, the Bill of Rights to prohibit racial and other discrimination and the changes to the Immigration Act to make it colour blind and  many other non-discriminatory measures were Conservative initiatives.

Most new immigrants here for an opportunity not a hand out find CPC economic and social values closest to theirs.