What did tsar Nicholas 2 do after Bloody Sunday to show the workers he was willing to share some of his power

He created an elected parliament.

Bloody Sunday or Red Sunday is the name given to the events of Sunday, 22 January 1905 in St Petersburg, Russia, when unarmed demonstrators led by Father Georgy Gapon were fired upon by soldiers of the Imperial Guard as they marched towards the Winter Palace to present a petition to Tsar Nicholas II of Russia.

The events in St. Petersburg provoked public outrage and a series of massive strikes that spread quickly to the industrial centres of the Russian Empire. The massacre on Bloody Sunday is considered to be the start of the active phase of the Revolution of 1905.

After the events of bloody Sunday the Tsar Nicholas did nothing. Although the Tsar was not at the Winter Palace and did not give the order for the troops to fire, he was widely blamed for the inefficiency and callousness with which the crisis had been handled. While it was unrealistic for the marchers to expect Nicholas to ride out into the Palace Square to meet them, his absence from the city, against at least some advice, reflects a lack of imagination and perception that he was to show on other occasions. The killing of people, many of whom had seen the Tsar as their "Little Father", resulted in a surge of bitterness towards Nicholas and his autocratic rule. A widely quoted reaction was "we no longer have a Tsar".

This event was seen by the British ambassador as inflaming revolutionary activities in Russia and contributing to the Revolution of 1905. Media commentary in Britain and the United States was overwhelmingly negative towards the actions of an already unpopular regime. The writer Leo Tolstoy was emotionally impacted by the event, reflecting the revulsion of liberal, socialist and intellectual opinion within Russia itself.