More importantly, regardless of what side of the aisle you are on, you have to appreciate that these measurements are not simple, and are based on choices that are not obvious. Saez and Zucman, for example, exclude transfer income like the earned income tax credit from income. Under their methodology, even a very redistributionist economy, such as one with a high guaranteed minimum income, would look unequal because those transfer payments aren’t included in income.
How you measure things changes the results. Measuring pre-tax income shows inequality growing. Measuring income after taxes and transfers shows it growing slower. Measuring consumption shows it more or less stable since the 1960s: https://voxeu.org/article/consumption-and-income-inequality-.... There are good reasons to consider each of these measures. (Though I’d argue that measuring consumption is the most relevant to every day well being.)