Ed Broadbent nailed it but a gloss on his second suggestion should be added.

It is important that the NDP continue to focus on ending inequality but increasingly address the fact that the reactionary social conservative and free market fundamentalist elements currently to the fore in the Conservative Party as well as some less scrupulous  centrist Red Tories and Liberal Party elements make partisan political gains at the expense of the NDP by claiming or implying that the NDP favours new Canadians, Indigenous Canadians, etc. at the expense of older, long-established communities of lower and middle-income Canadians.

To be effective, the NDP message increasingly must be and be seen as being

(a) in support of a cohesive society through the advancement of equality for all Canadians by their common effort, and

(b) in opposition to efforts to pit against each other groups that do not enjoy an adequate measure of equality or a sense of being valued as equal members of Canadian society.