But Huot said Bissonnette had previously considered attacking other targets including feminists, shopping centres and airports.
On the evening of January 29, 2017, Bissonnette burst into the Quebec City mosque and unleashed a hail of bullets on the 40 men and four children who were chatting among themselves after evening prayers.
In March, Bissonnette admitted to killing Khaled Belkacemi, 60, Azzedine Soufiane, 57, Abdelkrim Hassane, 41, Mamadou Tanou Barry, 42, Aboubaker Thabti, 44, and Ibrahima Barry, 39, in the January attack.
Alexandre Bissonnette, a suspect in a shooting at a Quebec City mosque, arrives at the courthouse in Quebec City, Quebec, Canada, February 21, 2017.
Leila Nasr, spokeswoman for the National Council of Canadian Muslims (NCCM), an advocacy group, told Middle East Eye that whatever the court's ruling would have been, it was "an incredibly hard day".
A university student at the time of the shooting, Bissonnette was seduced by nationalist and supremacist ideologies into committing this "unjustified and deadly" massacre, Huot said.
"It's really just a day of processing what's happening and trying to find some sense of sanity in the middle of it".
He was a supporter of French far-right leader Marine Le Pen and US President Donald Trump.
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Silver agreed that the Bissonnette sentencing is also likely to be appealed, and she believes that's a good thing. The government said the change was needed to bring an end to "discount sentences" for mass murderers.
During the sentencing hearing Friday, Superior Court Justice Francois Huot described the attack as a hate crime.
The justice said that in the years leading up to the shooting, Bissonnette increasingly drank alcohol and experienced anxiety, depression, and suicidal thoughts. He argued a 150-year term would be the equivalent of a death sentence. Even if the judge decides the sentences should be served concurrently, it does not necessarily mean Bissonnette would walk out of prison after 25 years.
She said she believes the consecutive sentencing law needs to be reviewed in order to provide more guidance for judges and avoid the harm caused by the perception of inconsistent sentencing.
However, in the two years since the attack, some in the Muslim community say the outpouring of support has dried up.
"We have a long way to go to root out #Islamophobia, but we are more determined than ever". There were another 35 people in the mosque.
In Montreal, Quebec's largest city, people condemned the political discourse in the province, which they said contributes to Islamophobia and acts of violence.