Walter E. O'Hara amassed significant wealth in the textile industry before diversifying into other sectors. He founded the Narragansett Racing Association and constructed Narragansett Park, showcasing his entrepreneurial spirit. O'Hara also ventured into public utilities, establishing the Pawtucket Light and Power Co. His career included a pivotal role in investigating the Massachusetts State Police, resulting in a high-profile resignation. O'Hara's business acumen and leadership were evident in his various ventures and public sector involvement.

Walter E. O'Hara's political identity is marked by a blend of aggressive economic intervention and entrepreneurial ventures, creating a unique tension between public accountability and private gain. His investigation of the Massachusetts State Police in 1933 reveals a willingness to challenge authority, while his diverse business interests—from textiles to public utilities—show a penchant for risk-taking and innovation. O'Hara's personal volatility, particularly when intoxicated, adds an unpredictable dimension to his public persona, hinting at a deeply complex character.