Justin Trudeau said Monday his decision to attend an anti-black racism rally even amid ongoing restrictions on gatherings related to COVID-19 was a matter of balancing important competing interests.Trudeau was among thousands of people who flooded the streets of Ottawa Friday as part of protests around the world demanding immediate action to dismantle systemic racism.He said watching people from his office windows in downtown Ottawa, it was important for him to send a message he was listening to their concerns.The gatherings flouted ongoing public health restrictions on mass gatherings designed to slow the spread of COVID-19.