Two European cities are hosting Pride events under increased security after an extremist attack in Berlin left one person dead and more than two dozen injured last week.\u00a0Hamburg\u0027s Pride parade, one of Germany\u0027s largest, drew about 300,000 attendees, according to police and organizers. Hamburg is Germany\u0027s second-largest city. Hamburg\u0027s police chief said earlier this week that roughly twice as many officers as last year would protect the event.The Hamburg event\u0027s motto this year is "Queer in solidarity. Take a stand \u2014 for a future without fear." Amid the trucks taking part in the parade is one representing the Berlin event. People on the truck were asked to wear dark clothing as a sign of respect for the victims of the attack.\u00a0"When you look at the atmosphere here, you can see that there\u0027s still joy. At least, that\u0027s how it seems to me," Berlin parade organizer Manuel Opitz said. "I think we carry the grief in our hearts \u2014 and Berlin in our hearts, too \u2014 but we\u0027re bringing our pride out onto the streets, and you can see that."Amsterdam is holding a canal boat parade on Saturday. The event is the highlight of the city\u0027s annual Pride festival. Openly gay Dutch Prime Minister\u00a0Rob Jetten, dressed in a white shirt, black life vest and gold necklace, waved to gigantic crowds as he sailed in a small boat through the colorfully decorated parade of 80 vessels. Techno music pumped from speakers along the route. Other boats taking part in the parade included vessels representing the Dutch government ministries, the military and police as well as LGBTQ+ organizations and clubs.Meanwhile, motorboats carrying police officers cruised the canals and a helicopter hovered overhead as Saturday\u0027s parade got underway. Amsterdam Mayor Femke Halsema said in the aftermath of the Berlin attack that authorities in the city would, "where necessary, take extra measures that visitors will hopefully notice as little as possible."\u00a0A World Pride celebration is also being hosted in the Dutch capital this year.\u00a0Abdul Ballout, 21, plowed a vehicle into a crowd of celebrantes at the Berlin Pride Event, or Christopher Street Day, on July 25. Ballout then got out of the vehicle and apparently cut others wtih a machete, police said. After the attack, Ballout evaded police for about 24 hours before he was shot and killed by officers in a Berlin suburb.\u00a0Ballout, a German citizen with Lebanese roots, was known to have ties to ISIS, officials said, and was about to be disqualified from a deradicalization program after staff saw red flags. Ballout was previously known to authorities for multiple incidents.\u00a0After the attack, hundreds of mourners gathered at a makeshift memorial near the site of the incident. The crowds embraced, laid down flowers and rainbow flags and paid tribute to the victims of the attack with candles and homemade signs. \u00a0"This is not normal; those are just people," one woman at the memorial told CBS News. "They should not be judged or killed for their choice of love."\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0