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HANAU, GERMANY - FEBRUARY 24: The mother and father attend with the family and friends the funeral of Ferhat Unvar, one of the victims of last week's mass shooting on February 24, 2020 in Hanau, Germany. Tobias Rathjen shot dead nine men and women, all of immigrant heritage, at two hookah bars in Hanau on February 20 before killing his mother and himself. Police are certain of a right-wing motive to the crime and suspect Rathjen, who promoted conspiracy theories on YouTube, acted on his own. (Photo by Thomas Lohnes/Getty Images)

HANAU, GERMANY - FEBRUARY 24: The mother and father attend with the family and friends the funeral of Ferhat Unvar, one of the victims of last week's mass shooting on February 24, 2020 in Hanau, Germany. Tobias Rathjen shot dead nine men and women, all of immigrant heritage, at two hookah bars in Hanau on February 20 before killing his mother and himself. Police are certain of a right-wing motive to the crime and suspect Rathjen, who promoted conspiracy theories on YouTube, acted on his own. (Photo by Thomas Lohnes/Getty Images)

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HANAU, GERMANY - FEBRUARY 24: (EDITORS NOTE: Recrop of image 1208366896) Mourners gather prior to the funeral of victims of last week's mass shooting on February 24, 2020 in Hanau, Germany. Tobias Rathjen shot dead nine men and women, all of immigrant heritage, at two hookah bars in Hanau on February 20 before killing his mother and himself. Police are certain of a right-wing motive to the crime and suspect Rathjen, who promoted conspiracy theories on YouTube, acted on his own. (Photo by Thomas Lohnes/Getty Images)

HANAU, GERMANY - FEBRUARY 24:  (EDITORS NOTE: Recrop of image 1208366896)  Mourners gather prior to the funeral of victims of last week's mass shooting on February 24, 2020 in Hanau, Germany. Tobias Rathjen shot dead nine men and women, all of immigrant heritage, at two hookah bars in Hanau on February 20 before killing his mother and himself. Police are certain of a right-wing motive to the crime and suspect Rathjen, who promoted conspiracy theories on YouTube, acted on his own. (Photo by Thomas Lohnes/Getty Images)

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HANAU, GERMANY - FEBRUARY 24: The family and friends attend the funeral of Ferhat Unvar, one of the victims of last week's mass shooting on February 24, 2020 in Hanau, Germany. Tobias Rathjen shot dead nine men and women, all of immigrant heritage, at two hookah bars in Hanau on February 20 before killing his mother and himself. Police are certain of a right-wing motive to the crime and suspect Rathjen, who promoted conspiracy theories on YouTube, acted on his own. (Photo by Thomas Lohnes/Getty Images)

HANAU, GERMANY - FEBRUARY 24: The family and friends attend the funeral of Ferhat Unvar, one of the victims of last week's mass shooting on February 24, 2020 in Hanau, Germany. Tobias Rathjen shot dead nine men and women, all of immigrant heritage, at two hookah bars in Hanau on February 20 before killing his mother and himself. Police are certain of a right-wing motive to the crime and suspect Rathjen, who promoted conspiracy theories on YouTube, acted on his own. (Photo by Thomas Lohnes/Getty Images)

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HANAU, GERMANY - FEBRUARY 24: The family and friends attend the funeral of Ferhat Unvar, one of the victims of last week's mass shooting on February 24, 2020 in Hanau, Germany. Tobias Rathjen shot dead nine men and women, all of immigrant heritage, at two hookah bars in Hanau on February 20 before killing his mother and himself. Police are certain of a right-wing motive to the crime and suspect Rathjen, who promoted conspiracy theories on YouTube, acted on his own. (Photo by Thomas Lohnes/Getty Images)

HANAU, GERMANY - FEBRUARY 24: The family and friends attend the funeral of Ferhat Unvar, one of the victims of last week's mass shooting on February 24, 2020 in Hanau, Germany. Tobias Rathjen shot dead nine men and women, all of immigrant heritage, at two hookah bars in Hanau on February 20 before killing his mother and himself. Police are certain of a right-wing motive to the crime and suspect Rathjen, who promoted conspiracy theories on YouTube, acted on his own. (Photo by Thomas Lohnes/Getty Images)