Leandro N. Alem was a political activist. His legacy is founding the Civic Union Party in 1890 and leading the Revolution in the Park. This bloody event in today’s Plaza Lavalle led to the resignation of abusive President Miguel Celman. The monument by sculptor Pedro Zonza was erected at San Martín Plaza in 1925. Avenida Leandro N. Alem, one of the largest boulevards in Buenos Aires, was also named in his memory.