The protests in Belarus were sparked through Alexander Lukashenko, widely considered a dictator, who claimed victory in the contested presidential election to continue his 26th birthday.
Police reportedly shot Mr Taraikovsky dead. But the Belarusian government said he died after an explosive device he intended to throw at officials exploded in his hand.
In the photographs that have now emerged from Mr Taraikovsky’s death, the protester is shown with his hands on his body as blood flows from his chest amid the sounds of explosions and gunfire.
He then collapses in front of a line of cops and stands still, before officers walk in line to the frame and some lie on it.
Police launched tear gas, rubber bullets and stun grenades at a week-long demonstration since last Sunday’s election.
After the images, Taraikovsky’s partner Elena German said: “He has nothing in his hand.
“Here’s a shot, they shoot, he grabs his chest. Blood. It’s falling.”
Ms. German, who was able to see Mr. Taraikovsky’s body in a morgue on Friday, called foreign experts to investigate the death of her partner.
“There is a seam on the chest, the hollow sewn, but there is a black bruise; it’s small, but we’ve seen it,” he said.
“His hands and feet are absolutely intact, he has no bruising. Obviously, it’s a bullet in the chest.”
On Saturday, the day of Mr. Taraikovsky’s funeral, thousands more gathered at the site of the car mechanic’s death.
Some protesters contained, they said, because of the beatings of the police.
Other demonstrations, starting with a massive “March for Freedom”, were to take place in Minsk on Sunday.
The demonstration to culminate in the independence square of the open-air city of the main government building.
Clashes were feared as a pro-government demonstration was also planned for Sunday, starting two hours earlier.
The opposition said Lukashenko planned to send others from other parts of the country by bus and had been forced to participate.
Last Sunday’s elections were condemned around the world for unfairs, while the Belarusian government suggested ending the use of violence in its attempts to quell the ongoing protests.
Meanwhile, Igor Lesgchenya, Belarus’ ambassador to Slovakia, has become the first diplomat in his country to protest in his country.
In a video message, Mr Lesgchenya said: “In Slovakia, I constituted Belarus and the Belarusian people, who, according to the Constitution, are the source of force in our country.
“I stand in solidarity with those who have taken to the streets of Belarusian cities with non-violent processions so that their voices can be heard.”
He added: “I sincerely hope that my country’s long term will take into account the positions of all sectors of society and representatives of political forces.
“Belarusians have suffered this right.”
Protesters in Belarus are calling for opposition figure Svetlana Tikhanovskaya to be identified as the winner of Sunday’s presidential election.
Lukashenko declared the winner with 80% of the bizarrely superior votes, compared to only 10% of Ms. Tikhanouskaya, who has now fled to Lithuania.
Ms. Tikhanouskaya ran alongside two other women; Maria Kolesnikova and Veronika Tsepkalo.
Ms. Tikhanovskaya and Ms. Tsepkalo entered the festival after their husbands were unable to apply for public office.
Valery Tsepkalo fled Belarus with his two sons to Russia last month and is now in Ukraine, from where he has condemned the corruption rates that “politically motivated” him.
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In the early hours of Sunday, he claimed that his wife and children had been detained for more than two hours on the Russian side of the Russian-Ukrainian border while trying to succeed on it.
Meanwhile, Kolesnikova condemned Lukashenko’s resolve to unhook the phone of Russian Vladimir Putin on Saturday.
The debatable president of Belarus said the Russian leader had promised to help him save the country if necessary.
“He tried to ask Putin for help,” Koleniskova told Sky News.
“We don’t like this, of course, because our independent and sovereign Belarus is the main goal and we don’t like to lose it just to a president who needs to be a major president here.”