Jacobi I can't answer for Canadians but from my perspective in the UK you are attempting to create a false equivalence.
Nobody wants to justify right-wing terrorism.
Europe has seen an influx of tens of thousands of young men from Muslim-majority countries. In those countries personal freedoms are suppressed in the interests of theocracy. Women are oppressed to an appalling degree. If you are unaware of how bad things are for women in Muslim countries I suggest you read any of the three books written so far by Ayaan Hirsi Ali.
Democracy is held in contempt in the lands where these immigrants are coming from. A significant percentage of those young immigrants bring their hatred of liberal western values with them. They have no interest in integration. They look for the day when our way of life will be eradicated here in the west in favour of their worldview. Conditions in parts of countries with the highest levels of immigration have deteriorated beyond recognition. Pedophile gangs are only the tip of the iceberg.
A worrying number of Muslims travelled to Syria and Afghanistan to fight for ISIS. Their return to their homeland poses a threat of mass murder on our streets. Would you like me to list their recent 'successes'? Numerous plots are halted every year by our overworked security services.
Some far-right activists have responded with violence. Their actions are despicable - unequivocally evil - but anybody who tries to equate the threat they pose with the threat coming from mass immigration from Muslim-majority countries does not understand the problem.
I would recommend 'The Strange Death of Europe - Immigration, Identity, Islam' by Douglas Murray if it is a topic you would like to research further.
Edited to add- FMF is right to point out that Islam is as far right as it would be possible to be.