Sympathetic to the 1917 February Revolution, he was arrested after attempting to gain the support of Russian soldiers present in the country during World War I. Wexler was assassinated in custody shortly after, with the Romanian authorities suppressing any formal enquiry into his death.

In 1894, after the leadership decided to curb the radicalism of Munca, the party newspaper, by appointing moderate Ioan Nădejde as editor, Wexler-led socialists authored a proposal that sought to expand the journal outreach.

Among the envisioned actions were an increase in publication frequency and an expansion of discussed themes to include scientific and literary topics, news about foreign socialist movements, and articles related to the agrarian question.

The break with the official party was also partly motivated by disagreement of the Lumina supporters with the formers ambiguous position towards the question of Jewish naturalization in Romania.

Many of the students attending the Circle would later become leading figures of the Romanian socialist movement: Mihail Gheorghiu Bujor, Ion Sion, Ottoi Călin, Ilie Moscovici.

[8] Active in the Socialist Union of Romania, established in 1907, he was elected during its January 1908 conference a member in the commission tasked with revising the political program of the organization.

Throughout his life, Wexler kept in contact with several luminaries of the European socialist movement of the time, such as Karl Kautsky, Max Beer, Franz Mehring, Heinrich Cunow, Georg Ledebour, Arthur Stadthagen and Rosa Luxemburg.

The article considers the applicability of socialist ideas in the specific context of Romanian economy, paralleling Gherea's theory about the "Marxism in backward countries".

There, on the night of 14 May, he was sent towards the local command post, under an escort headed by Lieutenant Romalo, close friend of the Romanian heir apparent, Carol.

[20][23] According to the socialist press, his assassination had been planned by the military authorities with the acknowledgement of the PNL leadership, and his killer was rewarded with a bottle of rum, an insignificant amount of money, and promotion to the rank of sergeant.

[24][25] Wexler's death was followed by public outcry, leading to agitation among the Russian soldiers present on Romanian territory and bringing the attention of the Petrograd government.

[26][27] War minister Vintilă Brătianu sent two letters to the General Headquarters requesting further research into the matter, also enquiring whether the shooting was deliberate or was the result of a misinterpretation of orders.

Mârzescu, member of the government at the time, the story of an attempted escape had been proven false, but the investigation was suppressed following the intervention of Romalo's father, the physician of the Romanian royal family.