I am so excited that I get to meet with the left wing movement supporter for an interview.
The left wing is the left wing, as in the "left wing party" or "left wing politics" or something like that.
The reading for 左 is the on'yomi reading, さ. You can remember this because the left wing uses saws (さ) to cut down their right wing enemies. Imagine left wing hippies sawing down old right wing conservatives. BBrrrrbbbbbbzzzzz!