<p>An explosion early Saturday in Pilsen shattered a window at Ald. Byron Sigcho Lopez’s home, but no injuries were reported.</p><p>Video and still images provided by the 25th Ward alderman’s office shows someone igniting an explosive that detonates and leaves a cloud of smoke. Shattering glass and a car alarm can be heard on the video.</p><p>The explosion happened about 12:45 a.m. near West 21st Street and South Damen Avenue, according to Sigcho Lopez’s office, which also noted his three childr